Vulnerability Details : CVE-2022-2663
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.
Products affected by CVE-2022-2663
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-2663
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-2663
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2022-2663
-
The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.Assigned by: secalert@redhat.com (Primary)
References for CVE-2022-2663
-
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
[SECURITY] [DLA 3131-1] linux security updateMailing List;Third Party Advisory
-
https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
[PATCH 1/2] netfilter: nf_conntrack_irc: Tighten matching on DCC message
-
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
[SECURITY] [DLA 3173-1] linux-5.10 security updateMailing List;Third Party Advisory
-
https://www.youtube.com/watch?v=WIq-YgQuYCA
NAT-Again IRC demo with Irssi - YouTubeExploit;Third Party Advisory
-
https://www.debian.org/security/2022/dsa-5257
Debian -- Security Information -- DSA-5257-1 linuxThird Party Advisory
-
https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
NAT-Again: IRC NAT helper flawsExploit;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2022/08/30/1
oss-security - CVE-2022-2663: Linux netfilter: nf_conntrack_irc message handlingMailing List;Third Party Advisory
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