Check Point Advisories

Microsoft Frorefront UAG Redirection Spoofing (MS10-089; CVE-2010-2732)

Check Point Reference: CPAI-2010-313
Date Published: 9 Nov 2010
Severity: High
Last Updated: Tuesday 09 November, 2010
Source:
Industry Reference:CVE-2010-2732
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Microsoft Forefront Unified Access Gateway (UAG) is a virtual private networking solution that provides secure remote access to corporate networks for remote employees and business partners. It incorporates various remote access technologies such as VPN, SSL-VPN, DirectAccess, and Remote Desktop Services. A spoofing vulnerability has been reported in Microsoft Forefront Unified Access Gateway (UAG). A remote attacker could exploit this issue to acquire sensitive information, such as the user's credentials. The vulnerability is due to an error in the Forefront UAG that fails to validate and confirm redirection to an external Web site. A remote attacker can exploit this flaw by directing an UAG user to a local UAG URL that will redirect the user's browser session to an arbitrary site that will host the second stage of the attack. Successful exploitation of this vulnerability would allow the attacker to impersonate a legitimate UAG Web interface.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

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 Frorefront UAG Redirection Spoofing (MS10-089) 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:  RDP Enforcement Violation.
Attack Information:  Microsoft Frorefront UAG redirection spoofing (MS10-089)

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