Check Point Advisories

Microsoft SharePoint XSS scriptresx.ashx Elevation of Privilege (MS12-050; CVE-2012-1859)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-306
Date Published:	10 Jul 2012
Severity:	High
Last Updated:	Tuesday 20 October, 2015
Source:
Industry Reference:	CVE-2012-1859
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	An information disclosure and elevation of privilege vulnerability has been reported in Microsoft SharePoint. The vulnerability is due to an error in the way Microsoft SharePoint handles specially crafted URLs containing malicious JavaScript elements. A remote attacker may exploit this issue by enticing a target user to open a specially crafted web page. Successful exploitation of this vulnerability will allow an attacker to read content which was not intended to be disclosed. An attacker may also be able to issue SharePoint commands in the context of an authenticated user.

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

In the IPS tab, click Protections and find the Microsoft SharePoint XSS scriptresx.ashx Elevation of Privilege (MS12-050) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Client Enforcement Violation.
Attack Information: Microsoft SharePoint XSS scriptresx.ashx Elevation of Privilege (MS12-050)