Summary
=======

IrfanView Formats PlugIn is prone to an overflow condition. The JLS Plugin 
(jpeg_ls.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.

CVE number: CVE-2012-3585
Impact: high
Vendor Homepage: http://www.ifranview.com/
Vendor Notified: 16/06/2012
Found by: Joseph Sheridan of Reaction Information Security
href="http://www.reactionpenetrationtesting.co.uk/joseph-sheridan.html

This advisory is posted at:
http://www.reactionpenetrationtesting.co.uk/Irfanview-JLS-Heap-Overflow.
html

POC file posted at:
http://www.reactionpenetrationtesting.co.uk/vuln.jls
https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/19483.jls


Affected Products
=================

Irfanview Plugins version 4.33

Details
=======

IrfanView Formats PlugIn is prone to an overflow condition. The JLS Plugin 
(jpeg_ls.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
===========
Upgrade to Irfanview Plugins version 4.34

The following jls dll has been patched:
http://www.irfanview.net/plugins/jpeg_ls.zip

Distribution
============

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

* bugtraq () securityfocus com
* full-disclosure () lists grok org uk
* oss [dash] security [dash] subscribe [at] lists [dot] openwall [dot] com or

Future updates of this advisory, if any, will be placed on the ReactionIS
corporate website, but may or may not be actively announced on
mailing lists or newsgroups. Users concerned about this problem are
encouraged to check the URL below for any updates:

http://www.reactionpenetrationtesting.co.uk/Irfanview-JLS-Heap-Overflow.
html

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

Reaction Information Security 
Lombard House Business Centre,
Suite 117,
12-17 Upper Bridge Street,
Canterbury, Kent, CT1 2NF

Phone: +44 (0)1227 785050
Email: research () reactionis {dot} co {dot} uk
Web: http://www.reactionpenetrationtesting.co.uk

Joseph Sheridan
Technical Director
Principal Consultant
CHECK Team Leader, CREST Infrastructure, CREST Application, CISSP
Tel: 07812052515
Web: www.reactionis.com
Email: joe (at) reactionis.co (dot) uk [email concealed]

Reaction Information Security Limited.
Registered in England No: 6929383
Registered Office: 1, The Mews, 69 New Dover Road, Canterbury, CT1 3DZ

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