Updated StrongSwan packages has been released for Debian GNU/Linux 8 LTS

Package : strongswan
Version : 5.2.1-6+deb8u8
CVE ID : CVE-2018-17540

It was discovered that there was a denial-of-service vulnerability in
strongswan, a virtual private network (VPN) client and server.

Verification of an RSA signature with a very short public key caused an
integer underflow in a length check that resulted in a heap buffer
overflow.

For Debian 8 "Jessie", this issue has been fixed in strongswan version
5.2.1-6+deb8u8.

We recommend that you upgrade your strongswan packages.