| Name | CVE-2021-33620 |
| Description | Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2685-1, DSA-4924-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| squid (PTS) | bullseye | 4.13-10+deb11u3 | fixed |
| bullseye (security) | 4.13-10+deb11u4 | fixed |
| bookworm, bookworm (security) | 5.7-2+deb12u2 | fixed |
| sid, trixie | 6.13-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f
http://www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3ac9f5e86d6269ec0a8c.patch
https://megamansec.github.io/Squid-Security-Audit/range-fatal.html