Debian: lprng insecure temporary file vulnerability
Summary
Karol Lewandowski discovered that psbanner, a printer filter that
creates a PostScript format banner and is part of LPRng, insecurely
creates a temporary file for debugging purpose when it is configured
as filter. The program does not check whether this file already
exists or is linked to another place writes its current environment
and called arguments to the file unconditionally with the user id
daemon.
For the stable distribution (woody) this problem has been fixed in
version 3.8.10-1.2.
The old stable distribution (potato) is not affected by this problem.
For the unstable distribution (sid) these problems have been fixed in
version 3.8.20-4.
We recommend that you upgrade your lprng 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
...