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  3. RealNetworks RealPlayer 'rmoc3260.dll' ActiveX Control Memory Corruption Vulnerability

RealNetworks RealPlayer 'rmoc3260.dll' ActiveX Control Memory Corruption Vulnerability

Risk

High

Date Discovered

March 10, 2008

Description

RealNetworks RealPlayer 'rmoc3260.dll' ActiveX control is prone to a memory-corruption vulnerability. Successfully exploiting this issue allows remote attackers to execute arbitrary code in the context of the application using the affected ActiveX control. Failed exploit attempts will likely crash the application.

Technologies Affected

  • Real Networks RealPlayer 10.0.0
  • Real Networks RealPlayer 10.5.0
  • Real Networks RealPlayer 10.5.0 Beta v6.0.12.1016
  • Real Networks RealPlayer 10.5.0 v6.0.12.1040
  • Real Networks RealPlayer 10.5.0 v6.0.12.1053
  • Real Networks RealPlayer 10.5.0 v6.0.12.1056
  • Real Networks RealPlayer 10.5.0 v6.0.12.1059
  • Real Networks RealPlayer 10.5.0 v6.0.12.1069
  • Real Networks RealPlayer 10.5.0 v6.0.12.1235
  • Real Networks RealPlayer 10.5.0 v6.0.12.1348
  • Real Networks RealPlayer 10.5.0 v6.0.12.1483
  • Real Networks RealPlayer 11
  • Real Networks RealPlayer 11.0.2
  • Real Networks RealPlayer Enterprise
  • Real Networks rmoc3260.dll 6.0.10.45

Recommendations

Run all software as a nonprivileged user with minimal access rights.

To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Do not follow links provided by unknown or untrusted sources.

To reduce the likelihood of successful attacks, never follow links provided by unknown or untrusted individuals.

Set web browser security to disable the execution of script code or active content.

Since a successful exploit of this issue requires malicious code to execute in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Implement multiple redundant layers of security.

Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker's ability to exploit this vulnerability to execute arbitrary code.
The vendor addressed this issue in RealPlayer 11.0.3. Please contact the vendor for details.

Credits

Elazar Broad and Peter Vreugdenhil.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

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.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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