Debian Long Term Support / LTS Security Information / 2023 / Security Information -- DLA-3323-1 c-ares

Debian Security Advisory

DLA-3323-1 c-ares -- LTS security update

Date Reported:

18 Feb 2023

Affected Packages:

c-ares

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 1031525.
In Mitre's CVE dictionary: CVE-2022-4904.

More information:

It was discovered that in c-ares, an asynchronous name resolver library, the config_sortlist function is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow and thus may cause a denial of service.

For Debian 10 buster, this problem has been fixed in version 1.14.0-1+deb10u2.

We recommend that you upgrade your c-ares packages.

For the detailed security status of c-ares please refer to its security tracker page at: https://security-tracker.debian.org/tracker/c-ares

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS