The remote host is missing an update to loop-aes-utils announced via advisory DSA 1449-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201449-1

It was discovered that loop-aes-utils, tools for mounting and manipulating filesystems, didn't drop privileged users and groups in the correct order in the mount and umount commands. This could potentially allow a local user to gain additional privileges. For the stable distribution (etch), this problem has been fixed in version 2.12r-15+etch1. For the old stable distribution (sarge), this problem has been fixed in version 2.12p-4sarge2. We recommend that you upgrade your loop-aes-utils package.