The remote host is missing an update to cupsys announced via advisory USN-760-1.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libcupsimage2 1.2.2-0ubuntu0.6.06.13 Ubuntu 7.10: libcupsimage2 1.3.2-1ubuntu7.10 Ubuntu 8.04 LTS: libcupsimage2 1.3.7-1ubuntu3.4 Ubuntu 8.10: libcupsimage2 1.3.9-2ubuntu9.1 In general, a standard system upgrade is sufficient to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=USN-760-1

It was discovered that CUPS did not properly check the height of TIFF images. If a user or automated system were tricked into opening a crafted TIFF image file, a remote attacker could cause a denial of service or possibly execute arbitrary code with user privileges. In Ubuntu 7.10, 8.04 LTS, and 8.10, attackers would be isolated by the AppArmor CUPS profile.