XnView DICOM Parsing Integer Overflow Vulnerability

2010.03.16
Risk: High
Local: No
Remote: Yes
CWE: CWE-189


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

====================================================================== Secunia Research 10/03/2010 - XnView DICOM Parsing Integer Overflow Vulnerability - ====================================================================== 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 * XnView 1.97 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately Critical Impact: System Access Where: Remote ====================================================================== 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/ ====================================================================== 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. ====================================================================== 5) Solution Update to version 1.97.2. ====================================================================== 6) Time Table 21/12/2009 - Vendor notified. 28/12/2009 - Vendor notified again. Vendor response. 10/03/2010 - Public disclosure. ====================================================================== 7) Credits Discovered by Stefan Cornelius, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2009-4001 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/2009-60/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================

References:

http://newsgroup.xnview.com/viewtopic.php?f=35&t=19469
http://xforce.iss.net/xforce/xfdb/56802
http://www.securityfocus.com/bid/38629
http://www.securityfocus.com/archive/1/archive/1/509999/100/0/threaded
http://www.osvdb.org/62829
http://secunia.com/secunia_research/2009-60/


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