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  3. Internet Explorer and SharePoint 'toStaticHTML' Cross Domain Information Disclosure Vulnerability

Internet Explorer and SharePoint 'toStaticHTML' Cross Domain Information Disclosure Vulnerability

Risk

Medium

Date Discovered

June 8, 2010

Description

Microsoft Internet Explorer and Microsoft SharePoint are prone to a cross-domain information-disclosure vulnerability because they fail to properly enforce the same-origin policy. An attacker can exploit this issue to access local files or content from a browser window in another domain or security zone. This may allow the attacker to obtain sensitive information or may aid in further attacks.

Technologies Affected

  • Avaya Meeting Exchange - Client Registration Server
  • Avaya Meeting Exchange - Recording Server
  • Avaya Meeting Exchange - Streaming Server
  • Avaya Meeting Exchange - Web Conferencing Server
  • Avaya Meeting Exchange - Webportal
  • Avaya Messaging Application Server
  • Avaya Messaging Application Server 4
  • Avaya Messaging Application Server 5
  • Avaya Messaging Application Server MM 1.1
  • Avaya Messaging Application Server MM 2.0
  • Avaya Messaging Application Server MM 3.0
  • Avaya Messaging Application Server MM 3.1
  • Microsoft InfoPath 2003
  • Microsoft InfoPath 2003 SP1
  • Microsoft InfoPath 2003 SP3
  • Microsoft InfoPath 2007
  • Microsoft InfoPath 2007 SP1
  • Microsoft InfoPath 2007 SP2
  • Microsoft Internet Explorer 8
  • Microsoft SharePoint Server 2007
  • Microsoft SharePoint Server 2007 SP1
  • Microsoft SharePoint Server 2007 SP2
  • Microsoft SharePoint Server 2007 x64
  • Microsoft SharePoint Server 2007 x64 SP1
  • Microsoft SharePoint Server 2007 x64 SP2
  • Microsoft SharePoint Services 3.0 SP1
  • Microsoft SharePoint Services 3.0 SP2
  • Microsoft SharePoint Services 64-bit 3.0
  • Microsoft SharePoint Services 64-bit 3.0 SP1
  • Microsoft SharePoint Services 64-bit 3.0 SP2

Recommendations

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

When possible, run all software as a user with minimal privileges and limited access to system resources. Use additional precautions such as restrictive environments to insulate software that may potentially handle malicious content.

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 may indicate exploit attempts or activity that results from successful exploits.

Do not follow links provided by unknown or untrusted sources.

Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

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.
The vendor has released an advisory and updates. Please see the references for details.

Credits

Chris Weber of Casaba Security
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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