Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.032 (87.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 10.0, 11.0
- Linux Kernel
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2022/08/30/1 (Mailing List, Third Party Advisory)
- lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl@dgl.cx/T/
- lists.debian.org/debian-lts-announce/2022/10/msg00000.html (mailing-list, Mailing List, Third Party Advisory)
- dgl.cx/2022/08/nat-again-irc-cve-2022-2663 (Exploit, Third Party Advisory)
- www.youtube.com/watch (Exploit, Third Party Advisory)
- www.debian.org/security/2022/dsa-5257 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/11/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-2663?
- CVE-2022-2663 is a medium-severity vulnerability in Linux Kernel, classified under CWE-923. CVSS score: 5.3/10. Published 2022-09-01.
- How severe is CVE-2022-2663?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2022-2663 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.