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CVE-2022-40318

6.5 · MEDIUM

An issue was discovered in bgpd in FRRouting (FRR) through 8.4.

Published May 3, 2023CWE-125EPSS 1.98%

Overview

CVE-2022-40318 is a medium-severity vulnerability. It was published on May 3, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/FRRouting/frr/releasesReflists.debian.org/debian-lts-announce/2023/09/msg00020.htmlRefwww.debian.org/security/2023/dsa-5495GitHubgithub.com/FRRouting/frr/releasesReflists.debian.org/debian-lts-announce/2023/09/msg00020.htmlRefwww.debian.org/security/2023/dsa-5495

How CyberStrike helps

Frequently asked questions

What is CVE-2022-40318?

CVE-2022-40318 is a medium-severity vulnerability. It was published on May 3, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2022-40318?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-40318?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-40318?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-40318 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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