Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | - |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
- https://www.debian.org/security/2022/dsa-5257Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/30/1Mailing ListThird Party Advisory
- https://www.youtube.com/watch?v=WIq-YgQuYCAExploitThird Party Advisory
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
- https://www.debian.org/security/2022/dsa-5257Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/30/1Mailing ListThird Party Advisory
- https://www.youtube.com/watch?v=WIq-YgQuYCAExploitThird Party Advisory
FAQ
What is CVE-2022-2663?
CVE-2022-2663 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 un...
How severe is CVE-2022-2663?
CVE-2022-2663 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-2663?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.