Technical Information

Brief overview of the risk:
This security update resolves a privately reported vulnerability in Microsoft SQL Server on systems running SQL Server Reporting Services (SSRS). The vulnerability is a cross-site-scripting (XSS) vulnerability that could allow elevation of privilege, enabling an attacker to execute arbitrary commands on the SSRS site in the context of the targeted user. An attacker could exploit this vulnerability by sending a specially crafted link to the user and convincing the user to click the link. An attacker could also host a website that contains a webpage designed to exploit the vulnerability.
Detailed Information on the risk:

A reflected XSS vulnerability exists in SQL Server Report Manager that could allow an attacker to inject a client-side script into the user’s instance of Internet Explorer. The script could spoof content, disclose information, or take any action that the user could take on the site on behalf of the targeted user.

Further information on this exploit is available at : MS12-070