Gentoo Linux Security Advisory GLSA 200512-04 – The Oulu University Secure Programming Group (OUSPG) discovered that various ISAKMP implementations, including Openswan and racoon (included in the IPsec-Tools package), behave in an anomalous way when they receive and handle ISAKMP Phase 1 packets with invalid or abnormal contents. Versions less than 2.4.4 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/42278/glsa-200512-04.txt
Source: https://packetstormsecurity.com/files/42278/Gentoo-Linux-Security-Advisory-200512-4.html