A FRR security update has been released for Ubuntu Linux 22.04 LTS, 23.04, and 23.10.

[USN-6498-1] FRR vulnerabilities

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Ubuntu Security Notice USN-6498-1
November 21, 2023

frr vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in FRR.

Software Description:
- frr: FRRouting suite of internet protocols

Details:

It was discovered that FRR incorrectly handled certain BGP messages. A
remote attacker could possibly use this issue to cause FRR to crash,
resulting in a denial of service.

Update instructions:

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

Ubuntu 23.10:
frr 8.4.4-1.1ubuntu1.2

Ubuntu 23.04:
frr 8.4.2-1ubuntu1.6

Ubuntu 22.04 LTS:
frr 8.1-1ubuntu1.8

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

References:
https://ubuntu.com/security/notices/USN-6498-1
CVE-2023-38406, CVE-2023-38407, CVE-2023-47234, CVE-2023-47235

Package Information:
https://launchpad.net/ubuntu/+source/frr/8.4.4-1.1ubuntu1.2
https://launchpad.net/ubuntu/+source/frr/8.4.2-1ubuntu1.6
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.8