CVE-2019-18679

NameCVE-2019-18679
DescriptionAn issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)buster, buster (security)4.6-1+deb10u1vulnerable
bullseye, sid4.9-2fixed
squid3 (PTS)jessie3.4.8-6+deb8u5vulnerable
jessie (security)3.4.8-6+deb8u8vulnerable
stretch (security), stretch3.5.23-5+deb9u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsource(unstable)4.9-1
squid3source(unstable)(unfixed)

Notes

Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch
http://www.squid-cache.org/Advisories/SQUID-2019_11.txt

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