Check Point Advisories

Microsoft Outlook Web Access HTML Validation Cross Site Scripting (MS08-039; CVE-2008-2248)

Check Point Reference: CPAI-2008-094
Date Published: 8 Jul 2008
Severity: High
Last Updated: Tuesday 08 July, 2008
Industry Reference:CVE-2008-2248
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65

Who is Vulnerable?
Vulnerability Description Outlook Web Access (OWA) is a webmail service of Microsoft Exchange Server 5.0 and later. The web interface of OWA resembles the interface in Microsoft Outlook. A cross-site scripting vulnerability has been detected in Outlook Web Access. The vulnerability is a result of OWA incorrectly parsing HTML when opening e-mail from within OWA. An attacker could exploit this vulnerability by sending a specially crafted e-mail message that contains a malicious script to the victim. Successful exploitation of this issue could allow the attacker to login to the OWA session, leading to elevation of privilege.

Protection Overview

This protection will detect and block malformed SMTP messages.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75 / R71 / R70 / R65

  1. In the IPS tab, click Protections and find the Microsoft Outlook Web Access HTML Validation Cross Site Scripting (MS08-039) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  SMTP Protection Violation.
Attack Information:  Microsoft Outlook Web Access HTML validation cross site scripting (MS08-039)

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