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Ubuntu Security Notice USN-5907-1

Ubuntu Security Notice USN-5907-1
Posted Mar 2, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5907-1 - It was discovered that c-ares incorrectly handled certain sortlist strings. A remote attacker could use this issue to cause c-ares to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-4904
SHA-256 | 01a2a29aeacbb0153e0930f02c63d8f35b35a2f924c914271ee7f5196be71235

Ubuntu Security Notice USN-5907-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5907-1
March 02, 2023

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

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

c-ares could be made to crash or run programs if it processed specially
crafted input.

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

Details:

It was discovered that c-ares incorrectly handled certain sortlist strings.
A remote attacker could use this issue to cause c-ares to crash, resulting
in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 22.10:
libc-ares2 1.18.1-1ubuntu0.22.10.1

Ubuntu 22.04 LTS:
libc-ares2 1.18.1-1ubuntu0.22.04.1

Ubuntu 20.04 LTS:
libc-ares2 1.15.0-1ubuntu0.2

Ubuntu 18.04 LTS:
libc-ares2 1.14.0-1ubuntu0.2

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

References:
https://ubuntu.com/security/notices/USN-5907-1
CVE-2022-4904

Package Information:
https://launchpad.net/ubuntu/+source/c-ares/1.18.1-1ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/c-ares/1.18.1-1ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/c-ares/1.15.0-1ubuntu0.2
https://launchpad.net/ubuntu/+source/c-ares/1.14.0-1ubuntu0.2
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