CVE-2022-2663

medium

Description

An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

References

https://www.openwall.com/lists/oss-security/2022/08/30/1

https://www.debian.org/security/2022/dsa-5257

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html

https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-09

https://www.youtube.com/watch?v=WIq-YgQuYCA

https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-34909

https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663

https://cert-portal.siemens.com/productcert/html/ssa-794697.html

https://cert-portal.siemens.com/productcert/html/ssa-769027.html

Details

Source: Mitre, NVD

Published: 2022-09-01

Updated: 2026-10-14

Named Vulnerability: GHSA-jq2w-p8gp-86fv

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

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