Headline
Ubuntu Security Notice USN-6323-1
Ubuntu Security Notice 6323-1 - Ben Cartwright-Cox discovered that FRR did not handle RFC 7606 attributes properly. A remote attacker could possibly use this to cause denial of service.
==========================================================================
Ubuntu Security Notice USN-6323-1
August 31, 2023
frr vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.04 LTS
Summary:
FRR could be made to close sessions if it received speacially
crafted network traffic.
Software Description:
- frr: FRRouting suite of internet protocols
Details:
Ben Cartwright-Cox discovered that FRR did not handle RFC 7606
attributes properly. A remote attacker could possibly use this to
cause denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
frr 8.4.2-1ubuntu1.3
Ubuntu 22.04 LTS:
frr 8.1-1ubuntu1.5
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6323-1
CVE-2023-31490
Package Information:
https://launchpad.net/ubuntu/+source/frr/8.4.2-1ubuntu1.3
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.5
Related news
Debian Linux Security Advisory 5495-1 - Multiple vulnerabilities were discovered in frr, the FRRouting suite of internet protocols, while processing malformed requests and packets the BGP daemon may have reachable assertions, NULL pointer dereference, out-of-bounds memory access, which may lead to denial of service attack.
Ubuntu Security Notice 6136-1 - It was discovered that FRR incorrectly handled parsing certain BGP messages. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. This issue only affected Ubuntu 23.04. It was discovered that FRR incorrectly handled parsing certain BGP messages. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service.
An issue found in Frrouting bgpd v.8.4.2 allows a remote attacker to cause a denial of service via the bgp_attr_psid_sub() function.