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windows/certificates: Fix bug in environment variable expansion #5697

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merged 4 commits into from
Aug 13, 2019
Merged

windows/certificates: Fix bug in environment variable expansion #5697

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b2199dd
Explicitly handle when getUserHomeDir returns empty
offlinemark Aug 7, 2019
12237cd
Handle when ExpandEnvironmentStringsW does a partial write
offlinemark Aug 7, 2019
5d19236
Fix formatting
offlinemark Aug 8, 2019
24f6032
Fix ptr to temporary bug; remove retry loop
offlinemark Aug 9, 2019
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Explicitly handle when getUserHomeDir returns empty
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@offlinemark
offlinemark committed Aug 8, 2019
commit b2199ddc403c1342de039a27ad566c3a63ea789f
5 changes: 5 additions & 0 deletions osquery/tables/system/windows/certificates.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -557,6 +557,11 @@ void findUserPersonalCertsOnDisk(const std::string& username,

std::string homeDir;
auto homeDirUnexpanded = getUserHomeDir(sid);
if (homeDirUnexpanded.empty()) {
VLOG(1) << "Could not find home dir for account " << username;
return;
}

// System accounts have environment variables in their paths
auto ret = expandEnvironmentVariables(homeDirUnexpanded, homeDir);
if (!ret.ok() || homeDir.empty()) {
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