CVE-2019-12525

Name	CVE-2019-12525
Description	An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.
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-1858-1, DLA-2278-1, DSA-4507-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
squid (PTS)	bullseye (security), bullseye	4.13-10+deb11u3	fixed
	bookworm, bookworm (security)	5.7-2+deb12u2	fixed
	sid, trixie	6.12-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
squid	source	buster	4.6-1+deb10u1	DSA-4507-1
squid	source	(unstable)	4.8-1
squid3	source	jessie	3.4.8-6+deb8u8	DLA-1858-1
squid3	source	stretch	3.5.23-5+deb9u2	DLA-2278-1
squid3	source	(unstable)	(unfixed)

Notes

http://www.squid-cache.org/Advisories/SQUID-2019_3.txt
Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-409956536647b3a05ee1e367424a24ae6b8f13fd.patch
Squid 3.5: http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-ec0d0f39cf28da14eead0ba5e777e95855bc2f67.patch