Libreswan and Heartbleed

Is Libreswan vulnerable to the OpenSSL "Heartbleed" exploit?

Libreswan is implementation of IPsec IKEv1 and IKEv2 keying protocols. Unlike some opensource VPN products which are based on TLS/SSL protocols IPsec implementations are not vulnerable to openssl vulnerability CVE-2014-0160 also known as Heartbleed.