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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