RealNetworks RealPlayer SIPR Heap Buffer Overflow Vulnerability
RealPlayer is RealNetworks's media player product used to render video and other media. For more information, visit:
Remote exploitation of a memory corruption vulnerability in RealNetworks, Inc.'s RealPlayer media player could allow attackers to execute arbitrary code in the context of the targeted user.
The vulnerability is due to the way RealPlayer handles specially crafted RealMedia files using the SIPR codec. A value is read directly from the media file at a certain offset and is passed to a memory copy operation as the length parameter. This can cause the memory copy operation to overflow the bounds of a fixed sized heap buffer. This condition may lead to arbitrary code execution.
Successful exploitation could allow attackers to execute arbitrary code in the context of the currently logged-on user. To exploit this vulnerability, an attacker must persuade a victim into using RealPlayer to open a specially crafted media file. This could be accomplished by either direct link or referenced from a website under the attacker's control. An attacker could host a Web page containing a malformed file. Upon visiting the malicious Web page, exploitation would occur and execution of arbitrary code would be possible. Alternatively a malicious media file could be attached within an e-mail file.
RealPlayer versions prior to 14.0.6 are vulnerable.
iDefense is currently unaware of any workarounds for this issue.
RealNetworks has released fixes which addresses this issue. Information about downloadable vendor updates can be found by clicking on the URLs shown.
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2011-2945 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
03/30/2011 Initial Vendor Notification
03/30/2011 Vendor Reply
08/16/2011 Coordinated Public Disclosure
This vulnerability was reported to iDefense by Omair.
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Copyright © 2011 Verisign, Inc.
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