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iDefense Security Advisory 12.10.10: RealNetworks RealPlayer Memory Corruption Vulnerability
iDefense Security Advisory 12.10.10
Dec 10, 2010
RealPlayer is RealNetworks's media player product used to render video
and other media. For more information, visit http://www.real.com/
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 specifically exists in the way RealPlayer handles
specially crafted RealMedia video files.
When processing specially crafted RealMedia files, RealPlayer uses a
value from the file to control a loop operation. Realplayer fails to
validate the value before using it, which leads to heap memory
corruption and an exploitable condition.
Successful exploitation could allow attackers to execute arbitrary code
in the context of the current 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.
Windows RealPlayer SP 1.1.4 and prior and Linux RealPlayer 18.104.22.1684
and prior are vulnerable.
iDefense is currently unaware of any workarounds for this issue.
VI. VENDOR RESPONSE
RealNetworks has released a patch which addresses this issue.
Information about downloadable vendor updates can be found by clicking
on the URLs shown.
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2010-4386 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
04/14/2010 Initial Contact
04/14/2010 Initial Response
12/10/2010 Coordinated public disclosure
This vulnerability was reported to iDefense by Omair.
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X. LEGAL NOTICES
Copyright © 2010 iDefense, Inc.
Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@xxxxxxxxxxxx for permission.
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.