The remote host is missing an update to xine-lib announced via advisory DSA 657-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20657-1

A heap overflow has been discovered in the DVD subpicture decoder of xine-lib. An attacker could cause arbitrary code to be executed on the victims host by supplying a malicious MPEG. By tricking users to view a malicious network stream, this is remotely exploitable. For the stable distribution (woody) this problem has been fixed in version 0.9.8-2woody2. For the unstable distribution (sid) this problem has been fixed in version 1-rc6a-1. We recommend that you upgrade your libxine packages.