loop-aes-utils privilege escalation

It was discovered that loop-aes-utils, tools for mounting and manipulating
filesystems, didn’t drop privileged user and group permissions in the correct order
in the mount and umount commands. This could potentially allow a local
user to gain additional privileges.

For the old stable distribution (sarge), this problem has been fixed in
version 2.12p-4sarge2.

For the stable distribution (etch), this problem has been fixed in version
2.12r-15+etch1.

We recommend that you upgrade your loop-aes-utils package.