CVE-2022-36440: A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function

High severity · published Apr 3, 2023

CVE-2022-36440

A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function

7.5

CVSS

1.6%

EPSS

On KEV

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.6% · higher than 76% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

10.0; 11.0; 12.0 · source: NVD

Fedora · Fedoraproject

36; 37; 38 · source: NVD

Frrouting · Frrouting

8.3 · source: NVD

Affected product

Debian Linux

Debian

All Debian Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2022-36440

CVE.org

https://www.cve.org/CVERecord?id=CVE-2022-36440

Third Party Advisory

https://github.com/spwpun/pocs

Exploit

https://github.com/spwpun/pocs/blob/main/frr-bgpd.md

Mailing List

https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html

Mailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HU4PKLUVB5CTMOVQ2GV33TNUNMJCBGD/

Mailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBXEXL2ZQBWCBLNUP6P67FHECXQWSK3L/

Mailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GM66PNHGCXZU66LQCTP2FSJLFF6CVMSI/