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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the tetex packages
Detailed Explanation for this Vulnerability Assessment
Updated packages for dvips are available which fix a vulnerability permiting
print users to execute arbitrary commands.
[Updated 13 Aug 2003]
Added tetex-doc package that was originally left out of the errata.
The dvips utility converts DVI format into PostScript(TM), and is used in
Red Hat Linux as a print filter for printing DVI files. A vulnerability
has been found in dvips which uses the system() function insecurely when
Since dvips is used in a print filter, this permits local or remote
attackers who have print access to carefully craft a print job that permits
them to execute arbitrary code as the user 'lp'.
A work around for this vulnerability is to remove the print filter for DVI
files. The following commands, run as root, will accomplish this:
rm -f /usr/share/printconf/mf_rules/mf40-tetex_filters
rm -f /usr/lib/rhs/rhs-printfilters/dvi-to-ps.fpi
However, to fix the problem in the dvips utility as well as remove the
print filter we recommend that all users upgrade to the these packages
contained within this erratum which contain a patch for this issue.
This vulnerability was discovered by Olaf Kirch of SuSE.
Additionally, the file /var/lib/texmf/ls-R had world-writable permissions.
This issue is also fixed by the packages contained within this erratum.
Solution : http://rhn.redhat.com/errata/RHSA-2002-195.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security
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