CVE-2021-28652

Published: 27 May 2021

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

Priority

Low

CVSS 3 base score: 4.9

Status

Package Release Status
squid
Launchpad, Ubuntu, Debian
Upstream
Released (4.15,4.13-10)
Ubuntu 21.04 (Hirsute Hippo)
Released (4.13-1ubuntu4.1)
Ubuntu 20.10 (Groovy Gorilla)
Released (4.13-1ubuntu2.2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (4.10-1ubuntu1.4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: http://www.squid-cache.org/Versions/v4/changesets/squid-4-0003e3518dc95e4b5ab46b5140af79b22253048e.patch
Upstream: https://github.com/squid-cache/squid/commit/0003e3518dc95e4b5ab46b5140af79b22253048e
squid3
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (3.5.27-1ubuntu1.11)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Notes

AuthorNote
mdeslaur
this issue only affects the Cache Manager, which is usually
restricted to trusted clients only.
The patch is intrusive to backport to 3.x versions, so we will
not be fixing this issue in older releases. We recommend setting
appropriate access control to limit connections from trusted
clients.

References

Bugs