The remote host is missing an update to file announced via advisory USN-439-1.
A security issue affects the following Ubuntu releases:
Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10
This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.
Details follow:
Jean-Sebastien Guay-Leroux discovered that file did not correctly check the size of allocated heap memory. If a user were tricked into examining a specially crafted file with the file utility, a remote attacker could execute arbitrary code with user privileges.
Solution: The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 5.10: libmagic1 4.12-1ubuntu1.1
Ubuntu 6.06 LTS: libmagic1 4.16-0ubuntu3.1
Ubuntu 6.10: libmagic1 4.17-2ubuntu1.1
In general, a standard system upgrade is sufficient to effect the necessary changes.