RHSA-2010:0401 - Security Advisory

Topic

Updated tetex packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 3.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

Description

teTeX is an implementation of TeX. TeX takes a text file and a set of
formatting commands as input, and creates a typesetter-independent DeVice
Independent (DVI) file as output.

A buffer overflow flaw was found in the way teTeX processed virtual font
files when converting DVI files into PostScript. An attacker could create a
malicious DVI file that would cause the dvips executable to crash or,
potentially, execute arbitrary code. (CVE-2010-0827)

Multiple integer overflow flaws were found in the way teTeX processed
special commands when converting DVI files into PostScript. An attacker
could create a malicious DVI file that would cause the dvips executable to
crash or, potentially, execute arbitrary code. (CVE-2010-0739,
CVE-2010-1440)

A stack-based buffer overflow flaw was found in the way teTeX processed DVI
files containing HyperTeX references with long titles, when converting them
into PostScript. An attacker could create a malicious DVI file that would
cause the dvips executable to crash. (CVE-2007-5935)

teTeX embeds a copy of Xpdf, an open source Portable Document Format (PDF)
file viewer, to allow adding images in PDF format to the generated PDF
documents. The following issues affect Xpdf code:

Multiple integer overflow flaws were found in Xpdf. If a local user
generated a PDF file from a TeX document, referencing a specially-crafted
PDF file, it would cause Xpdf to crash or, potentially, execute arbitrary
code with the privileges of the user running pdflatex. (CVE-2009-0791,
CVE-2009-3609)

All users of tetex are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 368591 - CVE-2007-5935 dvips -z buffer overflow with long href
• BZ - 491840 - CVE-2009-0791 xpdf: multiple integer overflows
• BZ - 526893 - CVE-2009-3609 xpdf/poppler: ImageStream::ImageStream integer overflow
• BZ - 572914 - CVE-2010-0827 tetex, texlive: Buffer overflow flaw by processing virtual font files
• BZ - 572941 - CVE-2010-0739 tetex, texlive: Integer overflow by processing special commands
• BZ - 586819 - CVE-2010-1440 tetex, texlive: Integer overflow by processing special commands

CVEs

• CVE-2009-0791
• CVE-2009-3609
• CVE-2010-0827
• CVE-2010-0739
• CVE-2010-1440
• CVE-2007-5935

References

• http://www.redhat.com/security/updates/classification/#moderate