Debian: DSA 376-1 Critical: Exim Buffer Overflow Threat

A buffer overflow exists in exim, which is the standard mail transport
agent in Debian. By supplying a specially crafted HELO or EHLO
command, an attacker could cause a constant string to be written past
the end of a buffer allocated on the heap. This vulnerability is not
believed at this time to be exploitable to execute arbitrary code.

For the stable distribution (woody) this problem has been fixed in
exim version 3.35-1woody1 and exim-tls version 3.35-3woody1.

For the unstable distribution (sid) this problem has been fixed in
exim version 3.36-8. The unstable distribution does not contain an
exim-tls package.

We recommend that you update your exim or exim-tls 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 update
will update the internal database
apt-get upgrade
will install corr...