| Name | CVE-2020-24606 |
| Description | Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF. |
| 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-2394-1, DSA-4751-1, ELA-294-1 |
| Debian Bugs | 968933 |
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 | fixed | |
| stretch (lts), stretch | 3.5.23-5+deb9u10 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| squid | source | buster | 4.6-1+deb10u4 | DSA-4751-1 | ||
| squid | source | (unstable) | 4.13-1 | 968933 | ||
| squid3 | source | jessie | 3.5.23-5+deb8u2 | ELA-294-1 | ||
| squid3 | source | stretch | 3.5.23-5+deb9u5 | DLA-2394-1 | ||
| squid3 | source | (unstable) | (unfixed) |
https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg
Squid 4: http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch