TELUS Security Labs VR - Adobe Reader U3D CLODMeshDeclaration Shading Count Memory Corruption

[TELUS Security Labs - Vulnerability Research <noreply () telus com>]

Adobe Reader U3D CLODMeshDeclaration Shading Count Buffer Overflow

TSL ID: FSC20100413-01

1. Affected Software

  Adobe Systems Acrobat Reader 8.1.6 for Linux
  Adobe Systems Acrobat Reader 9.2 for Linux
  Adobe Systems Acrobat Reader 9.3 for Linux

  Reference: http://get.adobe.com/reader/

2. Vulnerability Summary

  A remotely exploitable vulnerability has been discovered in Adobe Acrobat Reader for Linux. Specifically, the 
vulnerability is due to an integer overflow when processing the "Shading Count" field in the CLOD Mesh Declaration 
block, which may lead to a heap based buffer overflow and execution of arbitrary code. 

3. Vulnerability Analysis

  This vulnerability may be exploited by remote attackers to execute arbitrary code on the vulnerable system by 
enticing a user to open a maliciously crafted PDF document. A successful attack will result in arbitrary code executed 
on the target host with the privileges of the logged-on user. An unsuccessful attack can abnormally terminate the 
affected product.

4. Vulnerability Detection

  TELUS Security Labs has confirmed the vulnerability in:

  Adobe Systems Acrobat Reader 8.1.6 for Linux
  Adobe Systems Acrobat Reader 9.2 for Linux
  Adobe Systems Acrobat Reader 9.3 for Linux

5. Workaround

  Avoid opening untrusted PDF files, or use an alternative application to process PDF files.

6. Vendor Response

  The vendor, Adobe, has released an advisory regarding this vulnerability:

  http://www.adobe.com/support/security/bulletins/apsb10-09.html


7. Disclosure Timeline

  2010-02-19 Reported to vendor
  2010-02-19 Initial vendor response
  2010-04-13 Coordinated public disclosure

8. Credits

  Vulnerability Research Team, TELUS Security Labs

9. References

  CVE: CVE-2010-0196
  TSL: FSC20100413-01
  Vendor: apsb10-09

10. About TELUS Security Labs

  TELUS Security Labs, formerly Assurent Secure Technologies, is the leading provider of security research. Our 
research services include:

    * Vulnerability Research
    * Malware Research
    * Signature Development
    * Shellcode Exploit Development
    * Application Protocols
    * Product Security Testing
    * Security Content Development (parsers, reports, alerts)

  TELUS Security Labs provides a specialized portfolio of services to assist security product vendors with newly 
discovered commercial product vulnerabilities and malware attacks. Many of our services are provided on a subscription 
basis to reduce research costs for our customers. Over 50 of the world's leading security product vendors rely on TELUS 
Security Labs research.

  http://telussecuritylabs.com/

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