Vulnerabilities > CVE-2022-2663 - Improper Restriction of Communication Channel to Intended Endpoints vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
LOW Availability impact
NONE Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 | |
| OS | 2 |
Common Weakness Enumeration (CWE)
References
- https://www.openwall.com/lists/oss-security/2022/08/30/1
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
- https://www.youtube.com/watch?v=WIq-YgQuYCA
- https://www.debian.org/security/2022/dsa-5257
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/