| Name | CVE-2021-28116 |
| Description | Squid 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5171-1, ELA-660-1 |
| Debian Bugs | 986804 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| squid (PTS) | buster (security), buster, buster (lts) | 4.6-1+deb10u10 | fixed |
| bullseye (security), bullseye | 4.13-10+deb11u3 | fixed |
| bookworm (security), bookworm | 5.7-2+deb12u2 | fixed |
| sid, trixie | 6.12-1 | fixed |
| squid3 (PTS) | jessie, jessie (lts) | 3.5.23-5+deb8u7 | fixed |
| stretch (security) | 3.5.23-5+deb9u7 | vulnerable |
| stretch (lts), stretch | 3.5.23-5+deb9u10 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - squid3 <postponed> (Check later when information is public)
https://www.zerodayinitiative.com/advisories/ZDI-CAN-11610/
https://bugs.squid-cache.org/show_bug.cgi?id=5131
https://www.openwall.com/lists/oss-security/2021/10/04/1
Squid4: http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_12.patch
Squid5: http://www.squid-cache.org/Versions/v5/changesets/squid-5-7a73a54cefff6bb83c03de219a73276e42d183d0.patch