| Name | CVE-2021-31808 |
| Description | An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. |
| 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 |
| Debian Bugs | 989043 |
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 |
| trixie, sid | 6.13-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://bugzilla.suse.com/show_bug.cgi?id=1185916
https://github.com/squid-cache/squid/security/advisories/GHSA-pxwq-f3qr-w2xf
http://www.squid-cache.org/Versions/v4/changesets/squid-4-e7cf864f938f24eea8af0692c04d16790983c823.patch
https://megamansec.github.io/Squid-Security-Audit/range-assert-int.html