CVE-2024-3652: Libreswan

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.

Affected products

• Libreswan Libreswan: from 3.22, before 4.15 (fixed in 4.15)

Published 2024-04-11. Last modified 2026-06-17.