Date: Fri, 19 Oct 2007 00:46:04 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200710-20 ] PDFKit, ImageKits: Buffer overflow
Message-ID: <20071018224604.GA24627@falco.falcal.net.>
Mail-Followup-To: gentoo-announce@gentoo.org,
bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
security-alerts@linuxsecurity.com
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature"; boundary="GvXjxJ+pjyke8COw"
Content-Disposition: inline
X-Web: http://falco.bz/
X-GPG-fingerprint: 04EB 153A 6B28 3E80 87A9 9B4F A77C 4BDE 021C 5BD2
X-GPG-Key: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x021C5BD2
Organization: Gentoo Linux Security Team
User-Agent: Mutt/1.5.16 (2007-06-09)
X-Virus-Scanned: antivirus-gw at tyumen.ru
--GvXjxJ+pjyke8COw
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200710-20
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: PDFKit, ImageKits: Buffer overflow
Date: October 18, 2007
Bugs: #188185
ID: 200710-20
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
PDFKit and ImageKits are vulnerable to an integer overflow and a stack
overflow allowing for the user-assisted execution of arbitrary code.
Background
==========
PDFKit is a framework for rendering of PDF content in GNUstep
applications. ImageKits is a collection of frameworks to support
imaging in GNUstep applications.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 gnustep-libs/pdfkit <= 0.9_pre062906 Vulnerable!
2 gnustep-libs/imagekits <= 0.6 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.
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Maurycy Prodeus discovered an integer overflow vulnerability possibly
leading to a stack-based buffer overflow in the XPDF code which PDFKit
is based on. ImageKits also contains a copy of PDFKit.
Impact
======
By enticing a user to view a specially crafted PDF file with a viewer
based on ImageKits or PDFKit such as Gentoo's ViewPDF, a remote
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
==========
PDFKit and ImageKits are not maintained upstream, so the packages were
masked in Portage. We recommend that users unmerge PDFKit and
ImageKits:
# emerge --unmerge gnustep-libs/pdfkit
# emerge --unmerge gnustep-libs/imagekits
As an alternative, users should upgrade their systems to use PopplerKit
instead of PDFKit and Vindaloo instead of ViewPDF.
References
==========
[ 1 ] CVE-2007-3387
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3387
[ 2 ] GLSA 200709-12
http://www.gentoo.org/security/en/glsa/glsa-200709-12.xml
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200710-20.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 2007 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/2.5
--GvXjxJ+pjyke8COw
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)
iQEVAwUBRxfiLDvRww8BFPxFAQKlmwf/UJY/qZs57AI1c9Tzpzs3G16yuvTPHj9Y
VlA88eqKJu9CcPxX+E52/H0zjpZdXD8vGgsxGuSVZth+1o4YdblLe3lcT/0VqnJW
C019T2R1h9DQLzTF5rCNd5yGvftcxHwuH1f/lKPGmstzREdP1lKS1aoyS85pVE8u
v7njn28JdAmEcCvQoDeQ4y/+LL5mEiCSsR3yoraMW8fwxGG1X2+ig54NKSYOjczZ
VaaBtXreWjdDTNegCR7mvxdbRJw2IyFfeUfFxISftNb1v+sZBViLpsOyy5MGlMDW
aKJnPJqhBnd7hBBTjOAQHUF7kHZIZUl0AlMkwDF41bL/otasIHlRTA==
=6C/Y
-----END PGP SIGNATURE-----
--GvXjxJ+pjyke8COw--
