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Ubuntu Security Notice USN-6481-1
November 15, 2023
frr vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
Summary:
FRR could be made to crash if it received specially crafted network
traffic.
Software Description:
- frr: FRRouting suite of internet protocols
Details:
It was discovered that FRR incorrectly handled certain malformed NLRI data.
A remote attacker could possibly use this issue to cause FRR to crash,
resulting in a denial of service. (CVE-2023-46752)
It was discovered that FRR incorrectly handled certain BGP UPDATE messages.
A remote attacker could possibly use this issue to cause FRR to crash,
resulting in a denial of service. (CVE-2023-46753)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
   frr                             8.4.4-1.1ubuntu1.1
Ubuntu 23.04:
   frr                             8.4.2-1ubuntu1.5
Ubuntu 22.04 LTS:
   frr                             8.1-1ubuntu1.7
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6481-1
   CVE-2023-46752, CVE-2023-46753
Package Information:
   https://launchpad.net/ubuntu/+source/frr/8.4.4-1.1ubuntu1.1
   https://launchpad.net/ubuntu/+source/frr/8.4.2-1ubuntu1.5
   https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.7