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  3. Microsoft Exchange Server Outlook Web Access HTML Injection Vulnerability

Microsoft Exchange Server Outlook Web Access HTML Injection Vulnerability

Risk

Medium

Date Discovered

June 14, 2005

Description

Outlook Web Access is prone to an HTML injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input. An attacker may leverage this issue to have arbitrary script code executed in the affected application of an unsuspecting user in the context of the affected user. This issue is reported to affect Outlook Web Access for Exchange Server 5.5.

Technologies Affected

  • Microsoft Exchange Server 5.5 SP4
  • Microsoft Outlook Web Access for Exchange Server 5.5

Recommendations

Disable any services that are not needed.

Outlook Web Access should be disabled on each Exchange Server if it is not explicitly required.

Do not open email messages from unknown or untrusted individuals.

Users should avoid opening email messages that arrive unsolicited or originate from an unfamiliar or untrusted source. This may limit exposure to this vulnerability as exploitation may require the victim to open a malicious email message.
Microsoft has released fixes to address supported versions of the software.

Credits

Gael Delalleau is credited with discovery.
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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