CVE-2022-2663CWE-923

CVE-2022-2663

Medium · published September 2, 2022

CVSS v3.1
5.3
EPSS
4%
Percentile
90.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.03813 · 90.0th percentile
Weakness
CWE-923 · Improper Restriction of Communication Channel to Intended Endpoints
Published
2022-09-02T01:15Z
Affected products (3)
ProductVersionsFixed in
linux/linux_kernelall versions—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
References (16)
https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663 · [email protected]https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html · [email protected]https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html · [email protected]https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/ · [email protected]https://www.debian.org/security/2022/dsa-5257 · [email protected]https://www.openwall.com/lists/oss-security/2022/08/30/1 · [email protected]https://www.youtube.com/watch?v=WIq-YgQuYCA · [email protected]https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663 · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html · af854a3a-2127-422b-91ae-364da2661108https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/ · af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5257 · af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2022/08/30/1 · af854a3a-2127-422b-91ae-364da2661108https://www.youtube.com/watch?v=WIq-YgQuYCA · af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/html/ssa-769027.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-794697.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
EPSS history
Timeline
  • 01 SEP 00:00Z
    An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message
    cvelistv5