Ubuntu Security Notices
USN-6436-1

USN-6436-1: FRR vulnerabilities

Publication date

18 October 2023

Overview

Several security issues were fixed in FRR.

Releases

23.04 22.04 LTS 20.04 LTS

Packages

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)

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

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

Learn more about how to get the fixes.

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

Ubuntu Release	Package Version
23.04 lunar	frr – 8.4.2-1ubuntu1.4
22.04 jammy	frr – 8.1-1ubuntu1.6
20.04 focal	frr – 7.2.1-1ubuntu0.2+esm1

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References

USN-6432-1

USN-6432-1