USN-6376-1: c-ares vulnerability

Publication date

18 September 2023

Overview

c-ares could be made to crash if it received specially crafted network traffic.

Releases


Packages

  • c-ares - library for asynchronous name resolution

Details

It was discovered that c-ares incorrectly parsed certain SOA replies. A
remote attacker could possibly use this issue to cause c-res to crash,
resulting in a denial of service.

It was discovered that c-ares incorrectly parsed certain SOA replies. A
remote attacker could possibly use this issue to cause c-res to crash,
resulting in a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal libc-ares2 –  1.15.0-1ubuntu0.4

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›