A Quagga security update has been released for Ubuntu Linux 16.04 LTS, 18.04 LTS, and 20.04 LTS.

[USN-6432-1] Quagga vulnerabilities

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Ubuntu Security Notice USN-6432-1
October 17, 2023

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

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

Summary:

Several security issues were fixed in Quagga.

Software Description:
- quagga: BGP/OSPF/RIP routing daemon

Details:

It was discovered that the Quagga BGP daemon did not properly check the
attribute length in NRLI. A remote attacker could possibly use this issue
to cause a denial of service. (CVE-2023-41358)

It was discovered that the Quagga BGP daemon did not properly manage memory
when reading initial bytes of ORF header. A remote attacker could possibly
use this issue to cause a denial of service. (CVE-2023-41360)

Update instructions:

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

Ubuntu 20.04 LTS:
quagga 1.2.4-4ubuntu0.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
quagga 1.2.4-1ubuntu0.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
quagga 0.99.24.1-2ubuntu1.4+esm1

After a standard system update you need to restart Quagga to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6432-1
CVE-2023-41358, CVE-2023-41360

Package Information:
https://launchpad.net/ubuntu/+source/quagga/1.2.4-4ubuntu0.1