The remote host is missing an update to libmodplug announced via advisory USN-521-1.
A security issue affects the following Ubuntu releases:
Ubuntu 6.06 LTS Ubuntu 6.10
This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.
Details follow:
Luigi Auriemma discovered that libmodplug did not properly sanitize its input. A specially crafted AMF file could be used to exploit this situation to cause buffer overflows and possibly execute arbitrary code as the user.
Solution: The problem can be corrected by upgrading your system to the following package versions: