The remote host is missing an update to freetype announced via advisory USN-324-1.
A security issue affects the following Ubuntu releases:
Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 LTS
This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.
An integer overflow has been discovered in the FreeType library. By tricking a user into installing and/or opening a specially crafted font file, these could be exploited to execute arbitrary code with the privileges of that user.
Solution: The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 5.04: libfreetype6 2.1.7-2.3ubuntu0.2
Ubuntu 5.10: libfreetype6 2.1.7-2.4ubuntu1.2
Ubuntu 6.06 LTS: libfreetype6 2.1.10-1ubuntu2.2
After a standard system upgrade you need to restart your session to effect the necessary changes.