The remote host is missing an update to libmikmod announced via advisory DSA 2071-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202071-1

Dyon Balding discovered buffer overflows in the MikMod sound library, which could lead to the execution of arbitrary code if a user is tricked into opening malformed Impulse Tracker or Ultratracker sound files. For the stable distribution (lenny), these problems have been fixed in version 3.1.11-6+lenny1. For the unstable distribution (sid), these problems have been fixed in version 3.1.11-6.2. We recommend that you upgrade your libmikmod packages.