CVE-2023-23009

Public Exploit

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.30%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/libreswan/libreswan/issues/954 issue tracking exploit patch
https://www.debian.org/security/2023/dsa-5368 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MFOIQX2LRL43P3GJT33DE7G7COHNXDN/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSMYJH7MC2FZGCY5NH5AXULO3ISXIHOF/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-23009?
CVE-2023-23009 has been scored as a medium severity vulnerability.
How to fix CVE-2023-23009?
To fix CVE-2023-23009, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-23009 being actively exploited in the wild?
It is possible that CVE-2023-23009 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.