Improper Restriction of Communication Channel to Intended Endpoints Affecting kernel-rt package, versions <0:4.18.0-477.10.1.rt7.274.el8_8
Threat Intelligence
EPSS
0.21% (60th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRT-3013435
- published 1 Sep 2022
- disclosed 30 Aug 2022
Introduced: 30 Aug 2022
CVE-2022-2663 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt to version 0:4.18.0-477.10.1.rt7.274.el8_8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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://access.redhat.com/security/cve/CVE-2022-2663
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl@dgl.cx/T/
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
- https://www.debian.org/security/2022/dsa-5257
- https://www.openwall.com/lists/oss-security/2022/08/30/1
- https://www.youtube.com/watch?v=WIq-YgQuYCA
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