GLSA 200601-17 Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
Posted on: 01/31/2006 12:42 AM

A new security update has been released for Gentoo Linux - Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows. Here the announcement:

Gentoo Linux Security Advisory GLSA 200601-17
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http://security.gentoo.org/
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Severity: Normal
Title: Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap
overflows
Date: January 30, 2006
Bugs: #117481, #117494, #117495, #115789, #118665
ID: 200601-17

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Synopsis
========

Xpdf, Poppler, GPdf, libextractor and pdftohtml are vulnerable to
integer overflows that may be exploited to execute arbitrary code.

Background
==========

Xpdf is a PDF file viewer that runs under the X Window System. Poppler
is a PDF rendering library based on the Xpdf 3.0 code base. GPdf is a
PDF file viewer for the GNOME 2 platform, also based on Xpdf.
libextractor is a library which includes Xpdf code to extract arbitrary
meta-data from files. pdftohtml is a utility to convert PDF files to
HTML or XML formats that makes use of Xpdf code to decode PDF files.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/xpdf lt; 3.01-r5 gt;= 3.01-r5
2 app-text/poppler lt; 0.4.3-r4 gt;= 0.4.3-r4
3 app-text/gpdf lt; 2.10.0-r3 gt;= 2.10.0-r3
4 media-libs/libextractor lt; 0.5.9 gt;= 0.5.9
5 app-text/pdftohtml lt; 0.36-r4 Vulnerable!
-------------------------------------------------------------------
NOTE: Certain packages are still vulnerable. Users should migrate
to another package if one is available or wait for the
existing packages to be marked stable by their
architecture maintainers.
-------------------------------------------------------------------
5 affected packages on all of their supported architectures.
-------------------------------------------------------------------

Description
===========

Chris Evans has reported some integer overflows in Xpdf when attempting
to calculate buffer sizes for memory allocation, leading to a heap
overflow and a potential infinite loop when handling malformed input
files.

Impact
======

By sending a specially crafted PDF file to a victim, an attacker could
cause an overflow, potentially resulting in the execution of arbitrary
code with the privileges of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xpdf users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=app-text/xpdf-3.01-r5"

All Poppler users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=app-text/poppler-0.4.3-r4"

All GPdf users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=app-text/gpdf-2.10.0-r3"

All libextractor users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=media-libs/libextractor-0.5.9"

All pdftohtml users should migrate to the latest stable version of
Poppler.

References
==========

[ 1 ] CVE-2005-3627
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3627
[ 2 ] CVE-2005-3626
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3626
[ 3 ] CVE-2005-3625
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3625
[ 4 ] CVE-2005-3624
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3624

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200601-17.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0



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