Medium severity6.5NVD Advisory· Published Feb 21, 2023· Updated Jun 17, 2026

CVE-2023-23009

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

osv-coords
pkg:rpm/almalinux/libreswan
Range: < 4.9-2.el9_2
Libreswan/Libreswanllm-fuzzy3 versions
<4.9+ 2 more
- (no CPE)range: <4.9
- (no CPE)
- cpe:2.3:a:libreswan:libreswan:4.9:*:*:*:*:*:*:*
Debian/linux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

github.com/libreswan/libreswan/issues/954nvdExploitIssue TrackingPatch
www.debian.org/security/2023/dsa-5368nvdThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MFOIQX2LRL43P3GJT33DE7G7COHNXDN/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSMYJH7MC2FZGCY5NH5AXULO3ISXIHOF/nvd

News mentions

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cvss	0.423
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000