Debian: DSA 848-1 Critical: Masqmail Local Command Execution

When sending failed mail messages, the address is not sanitised,
which allows a local attacker to execute arbitrary commands as the
mail user.

CAN-2005-2663

When opening the log file, masqmail does not relinquish
privileges, which allows a local attacker to overwrite arbitrary
files via a symlink attack.

For the old stable distribution (woody) these problems have been fixed in
version 0.1.16-2.2.

For the stable distribution (sarge) these problems have been fixed in
version 0.2.20-1sarge1.

For the unstable distribution (sid) these problems have been fixed in
version 0.2.20-1sarge1.

We recommend that you upgrade your masqmail 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
w...