Description (CNA)
An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemble_v2_incoming_fragments() would ignore unknown outer payloads but still store these in a fixed size array msg_digest.digest[PAYLIMIT]. An off-by-one error in the assertion PASSERT(logger, md->digest_roof < elemsof(md->digest)) causes the daemon to abort. No remote code execution is possible. Any configuration that allows IKEv2 connections that do not set fragmentation=no are vulnerable. IKEv1 is not affected.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| The Libreswan Project / libreswan | affected 4.6 through 5.3; unaffected 5.3.1 |
CWE
CWE-193, CWE-617
References
- https://libreswan.org/security/CVE-2026-12413/CVE-2026-12413.txt
- https://libreswan.org/security/CVE-2026-12413/
ADP enrichment
No English description supplied.
No references supplied.