[USN-6436-1] FRR vulnerabilities
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Ubuntu Security Notice USN-6436-1
October 18, 2023
frr vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in FRR.
Software Description:
- frr: FRRouting suite of internet protocols
Details:
It was discovered that the FRR 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 FRR 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)
It was discovered that FRR did not properly validate the attributes in the
BGP FlowSpec functionality. A remote attacker could possibly use this issue
to cause a denial of service. (CVE-2023-41909)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
frr 8.4.2-1ubuntu1.4
Ubuntu 22.04 LTS:
frr 8.1-1ubuntu1.6
Ubuntu 20.04 LTS (Available with Ubuntu Pro):
frr 7.2.1-1ubuntu0.2+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6436-1
CVE-2023-41358, CVE-2023-41360, CVE-2023-41909
Package Information:
https://launchpad.net/ubuntu/+source/frr/8.4.2-1ubuntu1.4
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.6
A FRR security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, and 23.04.
