Gentoo Linux Security Advisory 201603-13 - Multiple vulnerabilities have been found in libreSwan possibly resulting in Denial of Service. Versions less than 3.15 are affected.
d12d322b3f92f1c72f1e3e2c6be162b8c1f90d96d53576bb4e0dac246308230aRed Hat Security Advisory 2015-1979-01 - Libreswan is an implementation of IPsec & IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network. A flaw was discovered in the way Libreswan's IKE daemon processed IKE KE payloads. A remote attacker could send specially crafted IKE payload with a KE payload of g^x=0 that, when processed, would lead to a denial of service.
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