Resource exhaustion in Libreswan
CVE-2023-23009
Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (74.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Libreswan — versions 4.9
- Debian Linux — versions 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/libreswan/libreswan/issues/954 (Exploit, Patch, Issue Tracking)
- www.debian.org/security/2023/dsa-5368 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2023-23009?
- CVE-2023-23009 is a medium-severity vulnerability in Libreswan, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2023-02-21.
- How severe is CVE-2023-23009?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-23009 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.