CVE-2023-31124

Name	CVE-2023-31124
Description	c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when cross compiling aarch64 android. This will downgrade to using rand() as a fallback which could allow an attacker to take advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
c-ares (PTS)	bullseye (security), bullseye	1.17.1-1+deb11u3	vulnerable
	bookworm	1.18.1-3	vulnerable
	sid, trixie	1.34.2-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
c-ares	source	experimental	1.19.1-1
c-ares	source	(unstable)	1.19.1-2	unimportant

Notes

https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4
https://github.com/c-ares/c-ares/commit/c4930223e51d0e3dbfd8b2a814f4be2e269e2a9d (cares-1_19_1)
No impact on binaries shipped by Debian