CVE-2023-38711

Summary

CVE-2023-38711 is a vulnerability affecting Libreswan versions prior to 4.12. When processing IKEv1 Quick Mode connections with ID_IPV4_ADDR or ID_IPV6_ADDR and receiving an IDcr payload containing ID_FQDN, Libreswan experiences a NULL pointer dereference, resulting in a crash and restart of the pluto daemon. This issue poses a potential denial-of-service risk and should be addressed by updating to a patched version. The earliest known affected version is 4.6.

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