Vulnerability Note VU#402231

Adobe Shockwave Player Director file 'rcsL' chunk parsing vulnerability

Original Release date: 22 Oct 2010 | Last revised: 29 Oct 2010

Overview

Adobe Shockwave Player 11.5.8.612 and earlier versions on the Windows and Macintosh operating systems contain a critical vulnerability in the handling of "rcsL" chunks.

Description

Adobe Macromedia Shockwave Player is software that plays active web content developed in Macromedia and Adobe Director. Shockwave Player is available as an ActiveX control for Internet Explorer and as a plug-in for other web browsers.

A vulnerability has been discovered in Shockwave Player that can be exploited by an attacker to execute arbitrary code on a user's system. An attacker can create a specially crafted Adobe Director file with a specific value in an "rcsL" field causing an array-indexing error. More details are available in Adobe Security Bulletin APSA10-04.

Note: Exploit code for this vulnerability is publicly available.

Impact

A remote, unauthenticated attacker may be able to execute arbitrary code or cause the Shockwave player to crash.

Solution

Adobe recommends users of Adobe Shockwave Player 11.5.8.612 and earlier versions upgrade to the newest version 11.5.9.615. APSB10-25 contains more details.

Limit access to Director files

Restricting the handling of untrusted Director content may help mitigate this vulnerability. See Securing Your Web Browser for more information. Consider using the NoScript extension to whitelist web sites that can run Shockwave Player in Mozilla browsers such as Firefox. See the NoScript FAQ for more information.

Disable the Shockwave Player ActiveX control in Internet Explorer

The Shockwave Player ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSIDs:

    {166B1BCA-3F9C-11CF-8075-444553540000}
    {233C1507-6A77-46A4-9443-F871F945D258}
More information about how to set the kill bit is available in Microsoft Support Document 240797.Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:
    Windows Registry Editor Version 5.00

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{166B1BCA-3F9C-11CF-8075-444553540000}]
    "Compatibility Flags"=dword:00000400
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{166B1BCA-3F9C-11CF-8075-444553540000}]
    "Compatibility Flags"=dword:00000400

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{233C1507-6A77-46A4-9443-F871F945D258}]
    "Compatibility Flags"=dword:00000400
    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{233C1507-6A77-46A4-9443-F871F945D258}]
    "Compatibility Flags"=dword:00000400

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
AdobeAffected-22 Oct 2010
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

Thanks to Adobe and Secunia for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

  • CVE IDs: CVE-2010-3653
  • Date Public: 21 Oct 2010
  • Date First Published: 22 Oct 2010
  • Date Last Updated: 29 Oct 2010
  • Severity Metric: 41.46
  • Document Revision: 42

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