(Sun Issues T-Patches) libXpm Integer and Stack Overflows May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1011747 |
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SecurityTracker URL: http://securitytracker.com/id/1011747
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CVE Reference:
CVE-2004-0687, CVE-2004-0688
(Links to External Site)
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Updated: Oct 20 2004
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Original Entry Date: Oct 16 2004
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): X11 R6.8.0
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Description:
Some vulnerabilities were reported in libXpm. A remote user may be able to execute arbitrary code on applications that use libXpm.
The vendor reported that there are some integer overflows [CVE: CAN-2004-0687] and stack overflows [CVE: CAN-2004-0688] in the libXpm X Pixmap library, shipped as part of the X Window System.
A stack overflow is reported in xpmParseColors() in 'parse.c' that can be triggered by a specially crafted XPMv1 and XPMv2/3 file. A demonstration exploit file is available at:
http://scary.beasts.org/misc/doom.xpm
A stack overflow is reported in the reading of pixel values in the ParseAndPutPixels() function in 'create.c' and in the ParsePixels() function in 'parse.c'. A demonstration exploit file is available at:
http://scary.beasts.org/misc/doom2.xpm
An integer overflow is reported in the colorTable allocation in xpmParseColors() in 'parse.c'. The XpmCreateImageFromXpmImage, CreateXImage, ParsePixels, ParseAndPutPixels, and ParsePixels are affected.
The vendor credits Chris Evans with reporting these flaws. The advisory from Chris Evans is available at:
http://scary.beasts.org/security/CESA-2004-003.txt
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Impact:
A remote user can create a specially crafted image file that, when processed by an application using libXpm, will execute arbitrary code on the target system with the privileges of the target application.
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Solution:
Sun has issued preliminary T-patches, available at:
http://sunsolve.sun.com/tpatches
SPARC
* Solaris 9 T-patch T118300-01
x86 Platform
* Solaris 9 T-patch T118301-01
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Vendor URL: www.x.org/pub/X11R6.8.0/patches/README.xorg-CAN-2004-0687-0688.patch (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
UNIX (Solaris - SunOS)
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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: Sat, 16 Oct 2004 13:50:17 -0400
Subject: http://sunsolve.sun.com/search/document.do?assetkey=1-26-57652-1
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# Sun Alert ID: 57652
# Synopsis: Security Vulnerabilities in libXpm May Allow a Remote Unprivileged User to Execute Arbitrary Code
# Category: Security
# Product: Solaris, Sun Java Desktop System (JDS)
# BugIDs: 5077952, 5105762
# Avoidance: T-Patch, Patch
# State: Engineering Complete
# Date Released: 15-Oct-2004
# Date Closed:
# Date Modified:
CVE: CAN-2004-0687
Preliminary T-patches are available at:
http://sunsolve.sun.com/tpatches:
SPARC
* Solaris 9 T-patch T118300-01
x86 Platform
* Solaris 9 T-patch T118301-01
The following fix is available:
Linux
* Sun Java Desktop System (JDS) 2003 with the updated RPMs (patch-9367)
* Sun Java Desktop System (JDS) Release 2 with the updated RPMs (patch-9367)
For more information on obtaining updates see:
* http://wwws.sun.com/software/javadesktopsystem/faq.html#5q5
* http://wwws.sun.com/software/javadesktopsystem/faq.html#5q7
A final resolution is pending.
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