CVE-2021-28116

NameCVE-2021-28116
DescriptionSquid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs986804

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)buster4.6-1+deb10u4vulnerable
buster (security)4.6-1+deb10u5vulnerable
bullseye, sid4.13-9vulnerable
squid3 (PTS)stretch3.5.23-5+deb9u1vulnerable
stretch (security)3.5.23-5+deb9u6vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsource(unstable)(unfixed)986804
squid3source(unstable)(unfixed)

Notes

[buster] - squid <postponed> (Minor issue, revisit once fixed upstream)
[stretch] - squid3 <postponed> (Check later when information is public)
https://www.zerodayinitiative.com/advisories/ZDI-21-157/

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