CVE-2013-4564

CVE-2013-4564 describes a denial-of-service vulnerability affecting Libreswan version 3.6. Remote attackers can crash the software by sending a crafted IKE packet with a small length value and either no version or an invalid major number. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.