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Category:   Application (Generic)  >   Ghostscript Vendors:   GNU [multiple authors]
Ghostscript Heap Overflow in jbig2dec Library Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022029
SecurityTracker URL:  http://securitytracker.com/id/1022029
CVE Reference:   CVE-2009-0196   (Links to External Site)
Date:  Apr 10 2009
Impact:   Execution of arbitrary code via network, User access via network

Version(s): 8.64; possibly other versions
Description:   A vulnerability was reported in Ghostscript. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted PDF file that, when loaded by the target user, will trigger a heap overflow in the jbig2dec library in the decoding of JBIG2 symbol dictionary segments and execute arbitrary code on the target system. The code will run with the privileges of the target user.

The vendor was notified on March 26, 2009.

Alin Rad Pop of Secunia Research reported this vulnerability.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.ghostscript.com/ (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.
Apr 14 2009 (Red Hat Issues Fix) Ghostscript Heap Overflow in jbig2dec Library Lets Remote Users Execute Arbitrary Code
Red Hat has released a fix for Red Hat Enterprise Linux 5.
Jun 26 2009 (Sun Issues Fix) Ghostscript Heap Overflow in jbig2dec Library Lets Remote Users Execute Arbitrary Code
Sun has issued a fix for Solaris 10 and OpenSolaris.



 Source Message Contents

Subject:  Secunia Research: Ghostscript jbig2dec JBIG2 Processing Buffer Overflow

====================================================================== 

                     Secunia Research 09/04/2009

       - Ghostscript jbig2dec JBIG2 Processing Buffer Overflow -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

====================================================================== 
1) Affected Software 

* Ghostscript version 8.64

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Highly critical 
Impact: System access
Where:  Remote

====================================================================== 
3) Vendor's Description of Software 

"An interpreter for the PostScript (TM) language, with the ability to 
convert PostScript language files to many raster formats, view them 
on displays, and print them on printers that don't have PostScript 
language capability built in; An interpreter for Portable Document 
Format (PDF) files, with the same abilities; ..."

Product Link:
http://www.ghostscript.com/Ghostscript.html

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Ghostscript, which 
can be exploited by malicious people to potentially compromise a
user's system.

The vulnerability is caused due to a boundary error in the included 
jbig2dec library while decoding JBIG2 symbol dictionary segments. 
This can be exploited to cause a heap-based buffer overflow via a 
specially crafted PDF file.

Successful exploitation may allow execution of arbitrary code.

====================================================================== 
5) Solution 

Do not process untrusted PDF files.

====================================================================== 
6) Time Table 

26/03/2009 - Vendor notified.
26/03/2009 - vendor-sec notified.
02/04/2009 - Vendor response.
09/04/2009 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Alin Rad Pop, Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2009-0196 for the vulnerability.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-21/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================

 
 


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