[Full-disclosure] XnView JLS File Decompression Heap Overflow

["Joseph Sheridan" <joe@xxxxxxxxxxxxxx>]

XnView JLS File Decompression Heap Overflow 

Summary

XnView Formats PlugIn is prone to an overflow condition. The JLS Plugin 
(xjpegls.dll) library fails to properly sanitize user-supplied input resulting 
in a heap-based buffer overflow. With a specially crafted JLS compressed image 
file, a context-dependent attacker could potentially execute arbitrary code.

Advisory page: http://www.reactionpenetrationtesting.co.uk/xnview-jls-heap.html
POC file posted at: http://www.reactionpenetrationtesting.co.uk/vuln.jls

    CVE number: CVE-2012-4988
    Impact: High
    Vendor homepage: http://www.xnview.com/
    Vendor notified: 29/06/2012
    Vendor response: Fix was promised for 1.99.1 but no fix was released
    Found by: Joseph Sheridan, Director of Reaction Information Security

About ReactionIS

Reaction Information Security is a leading independent pen test consultancy 
specialising in delivering the highest quality services including network pen 
testing and web application security testing. As a CESG CHECK Service Provider 
we are authorised to carry out penetration testing on classified government 
networks.

Affected Products

XnView 1.99 and 1.99.1, 'All Plugins 1.90' and Xjpegls.dll (version 1.96.0.0) 
previous versions may also be affected.

Details

XnView Formats PlugIn is prone to an overflow condition. The JLS Plugin 
(xjpegls.dll) library fails to properly sanitize user-supplied input resulting 
in a heap-based buffer overflow. With a specially crafted JLS compressed image 
file, a context-dependent attacker could potentially execute arbitrary code.
Impact

If a user could be enticed to open a malicious JLS file, the attack could 
result in remote code execution.

Solution

No solution at the time of writing. Never open files from untrusted sources.
Distribution

In addition to posting on the website, a text version of this notice has been 
posted to the following e-mail and Usenet news recipients.

    bugtraq () securityfocus com
    full-disclosure () lists grok org uk 

Future updates of this advisory may or may not be actively announced on mailing 
lists or newsgroups. Users concerned about this problem are encouraged to check 
the advisory on our homepage at:
http://www.reactionpenetrationtesting.co.uk/xnview-jls-heap.html

Links:
http://www.reactionpenetrationtesting.co.uk
http://www.reactionpenetrationtesting.co.uk/security-whitepapers.html


Joseph Sheridan
Director
CHECK Team Leader, CREST Infrastructure, CREST Application, CISSP
Tel: 07812052515
Web: www.reactionis.co.uk 
Email: joe@xxxxxxxxxxxxxxxx

Reaction Information Security Limited.
Registered in England No: 6929383
Registered Office: 1, The Mews, 69 New Dover Road, Canterbury, CT1 3DZ
 
This email and any files transmitted with it are confidential and are intended 
solely for the use of the individual to whom they are addressed. If you are not 
the intended recipient please notify the sender. Any unauthorised dissemination 
or copying of this email or its attachments and any use or disclosure of any 
information contained in them, is strictly prohibited.

 Please consider the environment before printing this email


_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/