Handling of CVE-2023-44487 / HTTP2 Rapid Reset #3996
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lkarsten
changed the title
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Or maybe we should simply violate this part of RFC7540 ? SETTINGS_MAX_CONCURRENT_STREAMS (0x3): Indicates the maximum number I'm pretty sure that a limit of 10 or 20 would cater for all non-hostile uses. |
I think this was what Cloudflare had to back down on?
However, they employed blacklisting for IP of (inaccurately perceived) hostile users. Just sending resets without further punishment will not have the same kind of impact on user experience. |
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Looks like ATS went for rate limiting also: apache/trafficserver@8316188 |
Thus an attacker can endlessly spam us with new streams+RST regardless of the value of BTW we've done some experimentation with a rate-limiting facility for RSTs that looks very promising as a mitigation. I will open a PR here soon. |
daghf
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Oct 12, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
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We currently have two complementary mitigations: |
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Thanks a lot guys for your work on this, it is really appreciated. Do you have any idea when these 2 changes could be merged? |
nigoroll
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to nigoroll/varnish-cache
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Oct 16, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
nigoroll
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Oct 16, 2023
as agreed during bugwash. Ref varnishcache#3996
nigoroll
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Oct 16, 2023
nigoroll
added a commit
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Oct 16, 2023
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@TomasKorbar during bugwash today we agreed that we want to review again tomorrow and merge what is going to be merged for patch releases soon after. #3998 is planned to be merged even before the review session. |
chaudum
referenced
this issue
in grafana/loki
Oct 17, 2023
…lease-2.8.x) (#10891) [](https://renovatebot.com) This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | golang.org/x/net | indirect | minor | `v0.7.0` -> `v0.17.0` | --- ### Improper rendering of text nodes in golang.org/x/net/html [CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) / [GHSA-2wrh-6pvc-2jm9](https://togithub.com/advisories/GHSA-2wrh-6pvc-2jm9) <details> <summary>More information</summary> #### Details Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack. #### Severity - CVSS Score: 6.1 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) - [https://go.dev/cl/514896](https://go.dev/cl/514896) - [https://go.dev/issue/61615](https://go.dev/issue/61615) - [https://pkg.go.dev/vuln/GO-2023-1988](https://pkg.go.dev/vuln/GO-2023-1988) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-2wrh-6pvc-2jm9) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Improper rendering of text nodes in golang.org/x/net/html [CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) / [GHSA-2wrh-6pvc-2jm9](https://togithub.com/advisories/GHSA-2wrh-6pvc-2jm9) / [GO-2023-1988](https://pkg.go.dev/vuln/GO-2023-1988) <details> <summary>More information</summary> #### Details Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack. #### Severity Unknown #### References - [https://go.dev/issue/61615](https://go.dev/issue/61615) - [https://go.dev/cl/514896](https://go.dev/cl/514896) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-1988) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### swift-nio-http2 vulnerable to HTTP/2 Stream Cancellation Attack [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) <details> <summary>More information</summary> #### Details swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [https://github.com/Azure/AKS/issues/3947](https://togithub.com/Azure/AKS/issues/3947) - [https://github.com/akka/akka-http/issues/4323](https://togithub.com/akka/akka-http/issues/4323) - [https://github.com/alibaba/tengine/issues/1872](https://togithub.com/alibaba/tengine/issues/1872) - [https://github.com/apache/apisix/issues/10320](https://togithub.com/apache/apisix/issues/10320) - [https://github.com/caddyserver/caddy/issues/5877](https://togithub.com/caddyserver/caddy/issues/5877) - [https://github.com/dotnet/announcements/issues/277](https://togithub.com/dotnet/announcements/issues/277) - [https://github.com/eclipse/jetty.project/issues/10679](https://togithub.com/eclipse/jetty.project/issues/10679) - [https://github.com/etcd-io/etcd/issues/16740](https://togithub.com/etcd-io/etcd/issues/16740) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://github.com/haproxy/haproxy/issues/2312](https://togithub.com/haproxy/haproxy/issues/2312) - [https://github.com/hyperium/hyper/issues/3337](https://togithub.com/hyperium/hyper/issues/3337) - [https://github.com/junkurihara/rust-rpxy/issues/97](https://togithub.com/junkurihara/rust-rpxy/issues/97) - [https://github.com/kazu-yamamoto/http2/issues/93](https://togithub.com/kazu-yamamoto/http2/issues/93) - [https://github.com/ninenines/cowboy/issues/1615](https://togithub.com/ninenines/cowboy/issues/1615) - [https://github.com/openresty/openresty/issues/930](https://togithub.com/openresty/openresty/issues/930) - [https://github.com/opensearch-project/data-prepper/issues/3474](https://togithub.com/opensearch-project/data-prepper/issues/3474) - [https://github.com/tempesta-tech/tempesta/issues/1986](https://togithub.com/tempesta-tech/tempesta/issues/1986) - [https://github.com/varnishcache/varnish-cache/issues/3996](https://togithub.com/varnishcache/varnish-cache/issues/3996) - [https://github.com/apache/httpd-site/pull/10](https://togithub.com/apache/httpd-site/pull/10) - [https://github.com/apache/trafficserver/pull/10564](https://togithub.com/apache/trafficserver/pull/10564) - [https://github.com/envoyproxy/envoy/pull/30055](https://togithub.com/envoyproxy/envoy/pull/30055) - [https://github.com/facebook/proxygen/pull/466](https://togithub.com/facebook/proxygen/pull/466) - [https://github.com/grpc/grpc-go/pull/6703](https://togithub.com/grpc/grpc-go/pull/6703) - [https://github.com/h2o/h2o/pull/3291](https://togithub.com/h2o/h2o/pull/3291) - [https://github.com/kubernetes/kubernetes/pull/121120](https://togithub.com/kubernetes/kubernetes/pull/121120) - [https://github.com/line/armeria/pull/5232](https://togithub.com/line/armeria/pull/5232) - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [https://github.com/microsoft/CBL-Mariner/pull/6381](https://togithub.com/microsoft/CBL-Mariner/pull/6381) - [https://github.com/nghttp2/nghttp2/pull/1961](https://togithub.com/nghttp2/nghttp2/pull/1961) - [https://github.com/nodejs/node/pull/50121](https://togithub.com/nodejs/node/pull/50121) - [https://github.com/projectcontour/contour/pull/5826](https://togithub.com/projectcontour/contour/pull/5826) - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Moderate #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - "" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/grafana/loki). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy44LjEiLCJ1cGRhdGVkSW5WZXIiOiIzNy4xOS4yIiwidGFyZ2V0QnJhbmNoIjoicmVsZWFzZS0yLjgueCJ9--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
daghf
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This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
daghf
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This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
daghf
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Oct 17, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: #3996
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daghf
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This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
daghf
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Oct 17, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: #3996
nigoroll
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This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref varnishcache#3996
nigoroll
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Oct 18, 2023
This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref varnishcache#3996
nigoroll
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Oct 18, 2023
This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref varnishcache#3996
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All code identified as relevant up to now has been merged. See 3de5783 for an overview |
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Branches where we will land the mitigations:
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dridi
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Oct 18, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
dridi
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This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref varnishcache#3996
dridi
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that referenced
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Oct 18, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: varnishcache#3996
dridi
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Oct 18, 2023
This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref varnishcache#3996
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I took care of all the ports to older branches. |
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This is part of a larger patch series, let me have a look. |
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Thanks a lot guys, for such a swift reaction, really appreciate it. |
dridi
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Oct 24, 2023
This adds parameters h2_rst_allowance and h2_rst_allowance_period, which govern the rate of which we allow clients to reset h/2 streams. If the limit is exceeded the connection is closed. Mitigates: #3996
dridi
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Oct 24, 2023
This will allow per-session adjustments and also significantly lower the risk of inconsistent calculations in the rate limit code during parameter changes. Ref #3996
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This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | golang.org/x/net | `v0.13.0` -> `v0.17.0` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | ### GitHub Vulnerability Alerts #### [CVE-2023-39325](https://togithub.com/golang/go/issues/63417) A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### [CVE-2023-44487](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) ## HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ## swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity - CVSS Score: 7.5 / 10 (High) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/) - 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[https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231110-0008/](https://security.netapp.com/advisory/ntap-20231110-0008/) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### HTTP/2 Stream Cancellation Attack BIT-apisix-2023-44487 / BIT-aspnet-core-2023-44487 / BIT-contour-2023-44487 / BIT-dotnet-2023-44487 / BIT-dotnet-sdk-2023-44487 / BIT-envoy-2023-44487 / BIT-golang-2023-44487 / BIT-jenkins-2023-44487 / BIT-kong-2023-44487 / BIT-nginx-2023-44487 / BIT-nginx-ingress-controller-2023-44487 / BIT-node-2023-44487 / BIT-solr-2023-44487 / BIT-tomcat-2023-44487 / BIT-varnish-2023-44487 / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-2m7v-gc89-fjqf](https://togithub.com/advisories/GHSA-2m7v-gc89-fjqf) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) / [GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) / [GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) <details> <summary>More information</summary> #### Details ##### HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ##### swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [https://github.com/Azure/AKS/issues/3947](https://togithub.com/Azure/AKS/issues/3947) - [https://github.com/akka/akka-http/issues/4323](https://togithub.com/akka/akka-http/issues/4323) - [https://github.com/alibaba/tengine/issues/1872](https://togithub.com/alibaba/tengine/issues/1872) - [https://github.com/apache/apisix/issues/10320](https://togithub.com/apache/apisix/issues/10320) - [https://github.com/caddyserver/caddy/issues/5877](https://togithub.com/caddyserver/caddy/issues/5877) - [https://github.com/dotnet/announcements/issues/277](https://togithub.com/dotnet/announcements/issues/277) - [https://github.com/eclipse/jetty.project/issues/10679](https://togithub.com/eclipse/jetty.project/issues/10679) - [https://github.com/etcd-io/etcd/issues/16740](https://togithub.com/etcd-io/etcd/issues/16740) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://github.com/haproxy/haproxy/issues/2312](https://togithub.com/haproxy/haproxy/issues/2312) - [https://github.com/hyperium/hyper/issues/3337](https://togithub.com/hyperium/hyper/issues/3337) - [https://github.com/junkurihara/rust-rpxy/issues/97](https://togithub.com/junkurihara/rust-rpxy/issues/97) - [https://github.com/kazu-yamamoto/http2/issues/93](https://togithub.com/kazu-yamamoto/http2/issues/93) - [https://github.com/ninenines/cowboy/issues/1615](https://togithub.com/ninenines/cowboy/issues/1615) - [https://github.com/openresty/openresty/issues/930](https://togithub.com/openresty/openresty/issues/930) - [https://github.com/opensearch-project/data-prepper/issues/3474](https://togithub.com/opensearch-project/data-prepper/issues/3474) - [https://github.com/tempesta-tech/tempesta/issues/1986](https://togithub.com/tempesta-tech/tempesta/issues/1986) - [https://github.com/varnishcache/varnish-cache/issues/3996](https://togithub.com/varnishcache/varnish-cache/issues/3996) - [https://github.com/apache/httpd-site/pull/10](https://togithub.com/apache/httpd-site/pull/10) - [https://github.com/apache/trafficserver/pull/10564](https://togithub.com/apache/trafficserver/pull/10564) - [https://github.com/envoyproxy/envoy/pull/30055](https://togithub.com/envoyproxy/envoy/pull/30055) - [https://github.com/facebook/proxygen/pull/466](https://togithub.com/facebook/proxygen/pull/466) - [https://github.com/grpc/grpc-go/pull/6703](https://togithub.com/grpc/grpc-go/pull/6703) - [https://github.com/h2o/h2o/pull/3291](https://togithub.com/h2o/h2o/pull/3291) - [https://github.com/kubernetes/kubernetes/pull/121120](https://togithub.com/kubernetes/kubernetes/pull/121120) - [https://github.com/line/armeria/pull/5232](https://togithub.com/line/armeria/pull/5232) - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [https://github.com/microsoft/CBL-Mariner/pull/6381](https://togithub.com/microsoft/CBL-Mariner/pull/6381) - [https://github.com/nghttp2/nghttp2/pull/1961](https://togithub.com/nghttp2/nghttp2/pull/1961) - [https://github.com/nodejs/node/pull/50121](https://togithub.com/nodejs/node/pull/50121) - [https://github.com/projectcontour/contour/pull/5826](https://togithub.com/projectcontour/contour/pull/5826) - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715](https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/grpc/grpc-go/releases](https://togithub.com/grpc/grpc-go/releases) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12](https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12) - [https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94](https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94) - [https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81](https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.debian.org/security/2023/dsa-5540](https://www.debian.org/security/2023/dsa-5540) - [https://www.debian.org/security/2023/dsa-5549](https://www.debian.org/security/2023/dsa-5549) - [https://www.debian.org/security/2023/dsa-5558](https://www.debian.org/security/2023/dsa-5558) - [https://www.debian.org/security/2023/dsa-5570](https://www.debian.org/security/2023/dsa-5570) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) - [http://www.openwall.com/lists/oss-security/2023/10/18/4](http://www.openwall.com/lists/oss-security/2023/10/18/4) - [http://www.openwall.com/lists/oss-security/2023/10/18/8](http://www.openwall.com/lists/oss-security/2023/10/18/8) - [http://www.openwall.com/lists/oss-security/2023/10/19/6](http://www.openwall.com/lists/oss-security/2023/10/19/6) - [http://www.openwall.com/lists/oss-security/2023/10/20/8](http://www.openwall.com/lists/oss-security/2023/10/20/8) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - 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This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | golang.org/x/net | `v0.13.0` -> `v0.17.0` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | ### GitHub Vulnerability Alerts #### [CVE-2023-39325](https://togithub.com/golang/go/issues/63417) A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### [CVE-2023-44487](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) ## HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ## swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### HTTP/2 Stream Cancellation Attack BIT-apisix-2023-44487 / BIT-aspnet-core-2023-44487 / BIT-contour-2023-44487 / BIT-dotnet-2023-44487 / BIT-dotnet-sdk-2023-44487 / BIT-envoy-2023-44487 / BIT-golang-2023-44487 / BIT-jenkins-2023-44487 / BIT-kong-2023-44487 / BIT-nginx-2023-44487 / BIT-nginx-ingress-controller-2023-44487 / BIT-node-2023-44487 / BIT-solr-2023-44487 / BIT-tomcat-2023-44487 / BIT-varnish-2023-44487 / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-2m7v-gc89-fjqf](https://togithub.com/advisories/GHSA-2m7v-gc89-fjqf) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) / [GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) / [GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) <details> <summary>More information</summary> #### Details ##### HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ##### swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [https://github.com/Azure/AKS/issues/3947](https://togithub.com/Azure/AKS/issues/3947) - [https://github.com/akka/akka-http/issues/4323](https://togithub.com/akka/akka-http/issues/4323) - [https://github.com/alibaba/tengine/issues/1872](https://togithub.com/alibaba/tengine/issues/1872) - [https://github.com/apache/apisix/issues/10320](https://togithub.com/apache/apisix/issues/10320) - [https://github.com/caddyserver/caddy/issues/5877](https://togithub.com/caddyserver/caddy/issues/5877) - [https://github.com/dotnet/announcements/issues/277](https://togithub.com/dotnet/announcements/issues/277) - [https://github.com/eclipse/jetty.project/issues/10679](https://togithub.com/eclipse/jetty.project/issues/10679) - [https://github.com/etcd-io/etcd/issues/16740](https://togithub.com/etcd-io/etcd/issues/16740) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://github.com/haproxy/haproxy/issues/2312](https://togithub.com/haproxy/haproxy/issues/2312) - [https://github.com/hyperium/hyper/issues/3337](https://togithub.com/hyperium/hyper/issues/3337) - [https://github.com/junkurihara/rust-rpxy/issues/97](https://togithub.com/junkurihara/rust-rpxy/issues/97) - [https://github.com/kazu-yamamoto/http2/issues/93](https://togithub.com/kazu-yamamoto/http2/issues/93) - [https://github.com/ninenines/cowboy/issues/1615](https://togithub.com/ninenines/cowboy/issues/1615) - [https://github.com/openresty/openresty/issues/930](https://togithub.com/openresty/openresty/issues/930) - [https://github.com/opensearch-project/data-prepper/issues/3474](https://togithub.com/opensearch-project/data-prepper/issues/3474) - [https://github.com/tempesta-tech/tempesta/issues/1986](https://togithub.com/tempesta-tech/tempesta/issues/1986) - [https://github.com/varnishcache/varnish-cache/issues/3996](https://togithub.com/varnishcache/varnish-cache/issues/3996) - [https://github.com/apache/httpd-site/pull/10](https://togithub.com/apache/httpd-site/pull/10) - [https://github.com/apache/trafficserver/pull/10564](https://togithub.com/apache/trafficserver/pull/10564) - [https://github.com/envoyproxy/envoy/pull/30055](https://togithub.com/envoyproxy/envoy/pull/30055) - [https://github.com/facebook/proxygen/pull/466](https://togithub.com/facebook/proxygen/pull/466) - [https://github.com/grpc/grpc-go/pull/6703](https://togithub.com/grpc/grpc-go/pull/6703) - [https://github.com/h2o/h2o/pull/3291](https://togithub.com/h2o/h2o/pull/3291) - [https://github.com/kubernetes/kubernetes/pull/121120](https://togithub.com/kubernetes/kubernetes/pull/121120) - [https://github.com/line/armeria/pull/5232](https://togithub.com/line/armeria/pull/5232) - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [https://github.com/microsoft/CBL-Mariner/pull/6381](https://togithub.com/microsoft/CBL-Mariner/pull/6381) - [https://github.com/nghttp2/nghttp2/pull/1961](https://togithub.com/nghttp2/nghttp2/pull/1961) - [https://github.com/nodejs/node/pull/50121](https://togithub.com/nodejs/node/pull/50121) - [https://github.com/projectcontour/contour/pull/5826](https://togithub.com/projectcontour/contour/pull/5826) - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715](https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/grpc/grpc-go/releases](https://togithub.com/grpc/grpc-go/releases) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12](https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12) - [https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94](https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94) - [https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81](https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.debian.org/security/2023/dsa-5540](https://www.debian.org/security/2023/dsa-5540) - [https://www.debian.org/security/2023/dsa-5549](https://www.debian.org/security/2023/dsa-5549) - [https://www.debian.org/security/2023/dsa-5558](https://www.debian.org/security/2023/dsa-5558) - [https://www.debian.org/security/2023/dsa-5570](https://www.debian.org/security/2023/dsa-5570) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) - [http://www.openwall.com/lists/oss-security/2023/10/18/4](http://www.openwall.com/lists/oss-security/2023/10/18/4) - [http://www.openwall.com/lists/oss-security/2023/10/18/8](http://www.openwall.com/lists/oss-security/2023/10/18/8) - [http://www.openwall.com/lists/oss-security/2023/10/19/6](http://www.openwall.com/lists/oss-security/2023/10/19/6) - [http://www.openwall.com/lists/oss-security/2023/10/20/8](http://www.openwall.com/lists/oss-security/2023/10/20/8) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity - CVSS Score: 7.5 / 10 (High) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [https://github.com/golang/go/issues/63417](https://togithub.com/golang/go/issues/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/) - [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231110-0008/](https://security.netapp.com/advisory/ntap-20231110-0008/) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - "" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. 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Hi. Brought this up on IRC, but I think there should be some public record of it as well.
How well does Varnish handle the Rapid Reset attack?
Consensus seems to be that some new rate limiting should be added to Varnish.
Links:
Related fixes:
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