USN-6436-1: FRR vulnerabilities

Releases

• Ubuntu 23.04
• Ubuntu 22.04 LTS
• Ubuntu 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)

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

• frr - 8.1-1ubuntu1.6

Ubuntu 20.04

• frr - 7.2.1-1ubuntu0.2+esm1
  Available with Ubuntu Pro

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

References

• CVE-2023-41360
• CVE-2023-41909
• CVE-2023-41358

Related notices

• USN-6432-1: quagga-ripd, quagga-bgpd, quagga-core, quagga-ospf6d, quagga-isisd, quagga-pimd, quagga, quagga-ripngd, quagga-doc, quagga-ospfd