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Adobe Shockwave Lingo Script Memory Corruption Vulnerability



Adobe Shockwave Player is a popular Web browser plug-in. It is available for multiple Web browsers and platforms, including Windows, and MacOS. Shockwave Player enables Web browsers to display rich multimedia content in the form of Shockwave videos. For more information, see the vendor's site found at the following link:


Remote exploitation of a memory corruption vulnerability in Adobe Systems Inc.'s Shockwave could allow an attacker to execute arbitrary code with the privileges of the current user.

This vulnerability occurs when Shockwave processes a maliciously constructed "Lscr" record. This record can embed Lingo script code, which is Shockwave's scripting language. Through a certain series of Lingo instructions, it is possible to trigger a memory corruption vulnerability that results in uninitialized memory being used as a function pointer. This results in the execution of arbitrary code.


Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the user viewing the Web page. To exploit this vulnerability, a targeted user must load a malicious Web page created by an attacker. An attacker typically accomplishes this via social engineering or injecting content into compromised, trusted sites. After the user visits the malicious Web page, no further user interaction is needed.


Adobe Shockwave Player and earlier versions for Windows and Macintosh are vulnerable.


iDefense is currently unaware of effective workarounds for this vulnerability.


Adobe has released a fix which addresses this issue. For more information, consult their advisory at the following URL:


The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2013-1386 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.


05/11/2011 Initial Vendor Notification
05/11/2011 Initial Vendor Reply
04/09/2013 Coordinated Public Disclosure


This vulnerability was reported to iDefense by Luigi Auriemma.

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Copyright © 2013 Verisign, Inc.

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Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.