(Gentoo Issues Fix for PDFlib) LibTIFF Integer Overflow in 'tif_dirread' Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1012427
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SecurityTracker URL: http://securitytracker.com/id?1012427
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CVE Reference: CAN-2004-0804
(Links to External Site)
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Date: Dec 6 2004
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Impact: Denial of service via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Description: A vulnerability was reported in LibTIFF. A remote user can cause an application using LibTIFF to crash. PDFlib is affected.
Debian reported that Matthias Clasen discovered a division by zero error through an integer overflow. The flaw resides in 'libtiff/tif_dirread.c'.
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Impact: A remote user can cause the target application to crash.
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Solution: Gentoo has released a fix for PDFlib, which is affected by the LibTIFF vulnerability. Gentoo indicates that all PDFlib users should
upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/pdflib-5.0.4_p1"
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Vendor URL: www.pdflib.com/ (Links to External Site)
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Cause: Boundary error
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Underlying OS: Linux (Gentoo)
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Reported By: Luke Macken <lewk@gentoo.org>
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Sun, 5 Dec 2004 11:27:47 -0500
From: Luke Macken <lewk@gentoo.org>
Subject: [gentoo-announce] [ GLSA 200412-02 ] PDFlib: Multiple overflows in the included TIFF library
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Gentoo Linux Security Advisory GLSA 200412-02
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http://security.gentoo.org/
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Severity: Normal
Title: PDFlib: Multiple overflows in the included TIFF library
Date: December 05, 2004
Bugs: #69043
ID: 200412-02
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Synopsis
========
PDFlib is vulnerable to multiple overflows, which can potentially lead
to the execution of arbitrary code.
Background
==========
PDFlib is a library providing functions to handle PDF files. It
includes a modified TIFF library used to process TIFF images.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/pdflib < 5.0.4_p1 >= 5.0.4_p1
Description
===========
The TIFF library is subject to several known vulnerabilities (see GLSA
200410-11). Most of these overflows also apply to PDFlib.
Impact
======
A remote attacker could entice a user or web application to process a
carefully crafted PDF file or TIFF image using a PDFlib-powered
program. This can potentially lead to the execution of arbitrary code
with the rights of the program processing the file.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All PDFlib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/pdflib-5.0.4_p1"
References
==========
[ 1 ] PDFlib ChangeLog
http://www.pdflib.com/products/pdflib/info/PDFlib-5.0.4p1-changes.txt
[ 2 ] CAN-2004-0803
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0803
[ 3 ] CAN-2004-0804
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0804
[ 4 ] CAN-2004-0886
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0886
[ 5 ] GLSA 200410-11
http://www.gentoo.org/security/en/glsa/glsa-200410-11.xml
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200412-02.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 2004 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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