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Category:   Application (Multimedia)  >   ImageMagick Vendors:
ImageMagick Photoshop Document Buffer Overlow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1012916
SecurityTracker URL:
CVE Reference:   CVE-2005-0005   (Links to External Site)
Date:  Jan 17 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 6.1.8-8
Description:   iDEFENSE reported a buffer overflow vulnerability in ImageMagick in the processing of Photoshop files. A remote user can cause arbitrary code to be executed.

A remote user can create a specially crafted Photoshop document (.psd) file that, when processed by ImageMagick, will trigger a buffer overflow and execute arbitrary code.

The flaw resides in 'coders/psd.c'.

The vendor was notified on December 21, 2004.

The original advisory is available at:

Impact:   A remote user can cause arbitrary code to be executed on the target system.
Solution:   The vendor has issued a fixed version (6.1.8-8), available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 19 2005 (Debian Issues Fix) ImageMagick Photoshop Document Buffer Overlow Lets Remote Users Execute Arbitrary Code
Debian has released a fix.

 Source Message Contents

Subject:  iDEFENSE Security Advisory 01.17.05: Multiple Vendor ImageMagick

Multiple Vendor ImageMagick .psd Image File Decode Heap Overflow

iDEFENSE Security Advisory 01.17.05
January 17, 2005


ImageMagick provides a variety of graphics image-handling libraries and 
capabilities. These libraries are widely used and are shipped by default

on most Unix and Linux distributions. These libraries are commonly 
installed by default on computers where any other graphical image viewer
or X Desktop environment is installed (such as Gnome or KDE).

More information is available at the following site:


Remote exploitation of a buffer overflow vulnerability in The 
ImageMagick's Project's ImageMagick PSD image-decoding module could 
allow an attacker to execute arbitrary code. 

A heap overflow exists within ImageMagick, specifically in the decoding 
of Photoshop Document (PSD) files. The vulnerable code follows:


for (j=0; j < (long) layer_info[i].channels; j++) 

The array channel_info is only 24 elements large, and the loop variable,

"j", is bounded by a user-supplied value from the image file, thus 
allowing a heap overflow to occur when more than 24 layers are 
specified. If heap structures are overflowed in a controlled way, 
execution of arbitrary code is possible.


Exploitation may allow attackers to run arbitrary code on a victim's 
computer if the victim opens a specially formatted image. Such images 
could be delivered by e-mail or HTML, in some cases, and would likely 
not raise suspicion on the victim's part. Exploitation is also possible 
when a web-based application uses ImageMagick to process user-uploaded 
image files.


iDEFENSE has confirmed this vulnerability in ImageMagick 6.1.0 and 
ImageMagick 6.1.7. Earlier versions are also suspected vulnerable.

The following vendors may include vulnerable ImageMagick packages: 
   The Debian Project 
   Red Hat, Inc. 


Do not open files from untrusted sources. Do not allow untrusted sources

to process images using your web application.


This vulnerability is addressed in ImageMagick 6.1.8-8, available for
download at:


The Common Vulnerabilities and Exposures (CVE) project has assigned the
names CAN-2005-0005 to these issues. This is a candidate for inclusion
in the CVE list (, which standardizes names for
security problems.

A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.


12/21/2004  Initial vendor notification
01/14/2004  Initial vendor response
01/17/2005  Public disclosure


Andrei Nigmatulin is credited with this discovery.

Get paid for vulnerability research


Copyright (c) 2004 iDEFENSE, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDEFENSE. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.

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