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XnView DICOM Parsing Integer Overflow Vulnerability



Secunia Research: XnView DICOM Parsing Integer Overflow Vulnerability
Secunia Research: XnView DICOM Parsing Integer Overflow Vulnerability



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                     Secunia Research 10/03/2010

       - XnView DICOM Parsing Integer Overflow Vulnerability -

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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

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1) Affected Software 

* XnView 1.97

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately Critical
Impact: System Access
Where:  Remote

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3) Vendor's Description of Software 

"XnView is a free software to view, organise, convert graphics and
photos files or to create slide show, contact sheet, HTML pages.".

Product Link:
http://www.xnview.com/ 

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4) Description of Vulnerability

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

The vulnerability is caused due to an integer overflow when processing
DICOM images with certain dimensions. This can be exploited to cause a
heap-based buffer overflow by e.g. tricking a user into opening a 
specially crafted DICOM file.

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5) Solution 

Update to version 1.97.2.

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6) Time Table 

21/12/2009 - Vendor notified.
28/12/2009 - Vendor notified again. Vendor response.
10/03/2010 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2009-4001 for the vulnerability.

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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/ 

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-60/ 

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

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