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  3. Microsoft Outlook Mailto URI Remote Code Execution Vulnerability

Microsoft Outlook Mailto URI Remote Code Execution Vulnerability

Risk

High

Date Discovered

March 11, 2008

Description

Microsoft Outlook is prone to a remote code-execution vulnerability because the application fails to adequately validate user-supplied data. Successfully exploiting this issue will allow attackers to execute arbitrary code with the privileges of the currently logged-in user. This will facilitate the remote compromise of affected computers.

Technologies Affected

  • Microsoft Outlook 2000
  • Microsoft Outlook 2000 SP2
  • Microsoft Outlook 2000 SP3
  • Microsoft Outlook 2002
  • Microsoft Outlook 2002 SP1
  • Microsoft Outlook 2002 SP2
  • Microsoft Outlook 2002 SP3
  • Microsoft Outlook 2003
  • Microsoft Outlook 2003 SP2
  • Microsoft Outlook 2003 SP3
  • Microsoft Outlook 2007

Recommendations

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.

Attackers could exploit this vulnerability by enticing a user to visit a malicious website. Do not follow links provided by sources of questionable integrity.

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.

When possible, limit the privileges granted to users to the least amount required.

To reduce the impact of latent vulnerabilities, limit user privileges to the least amount possible. This can help prevent privileged functions from running.
The vendor has released an advisory to address this issue in supported versions of the affected application. Please see the referenced advisory for details on obtaining and applying the appropriate updates.

Credits

Greg MacManus of VeriSign iDefense Labs is credited with the discovery of this vulnerability.
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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