CVE-2022-36440

Public Exploit

Description

A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.20%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/spwpun/pocs third party advisory
https://github.com/spwpun/pocs/blob/main/frr-bgpd.md third party advisory exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GM66PNHGCXZU66LQCTP2FSJLFF6CVMSI/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HU4PKLUVB5CTMOVQ2GV33TNUNMJCBGD/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBXEXL2ZQBWCBLNUP6P67FHECXQWSK3L/ vendor advisory mailing list third party advisory
https://www.debian.org/security/2023/dsa-5495 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-36440?
CVE-2022-36440 has been scored as a high severity vulnerability.
How to fix CVE-2022-36440?
To fix CVE-2022-36440, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-36440 being actively exploited in the wild?
It is possible that CVE-2022-36440 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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