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Ubuntu Security Notice USN-6676-1

Ubuntu Security Notice USN-6676-1
Posted Mar 6, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6676-1 - Vojtěch Vobr discovered that c-ares incorrectly handled user input from local configuration files. An attacker could possibly use this issue to cause a denial of service via application crash.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2024-25629
SHA-256 | dbe62c177736e67d0f34559bcd12eaefa58499419a3ef18ef50db23f6bb5ade7

Ubuntu Security Notice USN-6676-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6676-1
March 06, 2024

c-ares vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

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

Software Description:
- c-ares: library for asynchronous name resolution

Details:

Vojtěch Vobr discovered that c-ares incorrectly handled user input from
local configuration files. An attacker could possibly use this issue to
cause a denial of service via application crash.

Update instructions:

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

Ubuntu 23.10:
libc-ares2 1.19.1-3ubuntu0.1

Ubuntu 22.04 LTS:
libc-ares2 1.18.1-1ubuntu0.22.04.3

Ubuntu 20.04 LTS:
libc-ares2 1.15.0-1ubuntu0.5

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libc-ares2 1.14.0-1ubuntu0.2+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libc-ares2 1.10.0-3ubuntu0.2+esm3

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

References:
https://ubuntu.com/security/notices/USN-6676-1
CVE-2024-25629

Package Information:
https://launchpad.net/ubuntu/+source/c-ares/1.19.1-3ubuntu0.1
https://launchpad.net/ubuntu/+source/c-ares/1.18.1-1ubuntu0.22.04.3
https://launchpad.net/ubuntu/+source/c-ares/1.15.0-1ubuntu0.5

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