Description: The remote host is missing an update to strongswan announced via advisory DSA 1759-1.
Gerd v. Egidy discovered that the Pluto IKE daemon in strongswan, an IPSec implementation for linux, is prone to a denial of service attack via a malicious packet.
For the stable distribution (lenny), this problem has been fixed in version 4.2.4-5+lenny1.
For the oldstable distribution (etch), this problem has been fixed in version 2.8.0+dfsg-1+etch1.
For the testing distribution (squeeze) and the unstable distribution (sid), this problem will be fixed soon.
We recommend that you upgrade your strongswan packages.