Debian: DSA 316-1 Critical: Nethack Buffer Overflow Exploit

The nethack package is vulnerable to a buffer overflow exploited via a
long '-s' command line option. This vulnerability could be used by an
attacker to gain gid 'games' on a system where nethack is installed.

Additionally, some setgid binaries in the nethack package have
incorrect permissions, which could allow a user who gains gid 'games'
to replace these binaries, potentially causing other users to execute
malicious code when they run nethack.

For the stable distribution (woody) these problems have been fixed in
version 3.4.0-3.0woody3.

For the old stable distribution (potato) problem xxx has been fixed in
version 3.3.0-7potato1.

For the unstable distribution (sid) these problems are fixed in
version 3.4.1-1.

We recommend that you update your nethack package.

Upgrade Instructions
--------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get...