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Ubuntu Security Notice USN-6136-1

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.

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Ubuntu Security Notice USN-6136-1
June 05, 2023

frr vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 23.04
  • Ubuntu 22.10
  • Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in FRR.

Software Description:

  • frr: FRRouting suite of internet protocols

Details:

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. (CVE-2023-31489)

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. (CVE-2023-31490)

Update instructions:

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

Ubuntu 23.04:
frr 8.4.2-1ubuntu1.1

Ubuntu 22.10:
frr 8.1-1ubuntu3.2

Ubuntu 22.04 LTS:
frr 8.1-1ubuntu1.4

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

References:
https://ubuntu.com/security/notices/USN-6136-1
CVE-2023-31489, CVE-2023-31490

Package Information:
https://launchpad.net/ubuntu/+source/frr/8.4.2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu3.2
https://launchpad.net/ubuntu/+source/frr/8.1-1ubuntu1.4

Related news

Debian Security Advisory 5495-1

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 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.

CVE-2023-31490: bgpd: Missing length check in bgp_attr_psid_sub about BGP_PREFIX_SID_SRV6_L3_SERVICE · Issue #13099 · FRRouting/frr

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.

CVE-2023-31489: bgpd: the length check of bgp_capability_llgr is not correct · Issue #13098 · FRRouting/frr

An issue found in Frrouting bgpd v.8.4.2 allows a remote attacker to cause a denial of service via the bgp_capability_llgr() function.

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