The remote host is missing an update to hplip announced via advisory USN-530-1.
A security issue affects the following Ubuntu releases:
Ubuntu 6.10 Ubuntu 7.04
This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.
Details follow:
It was discovered that the hpssd tool of hplip did not correctly handle shell meta-characters. A local attacker could exploit this to execute arbitrary commands as the hplip user.
Solution: The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 6.10: hplip 1.6.9-0ubuntu2.1
Ubuntu 7.04: hplip 1.7.3-0ubuntu1.1
In general, a standard system upgrade is sufficient to affect the necessary changes.