MS12-061  Vulnerability in Visual Studio Team Foundation Server Could Allow Elevation of Privilege

2012-09-11 This security update resolves a privately reported vulnerability in Visual Studio Team Foundation Server. The vulnerability is a cross-site scripting (XSS) vulnerability that could allow elevation of privilege, enabling an attacker to execute arbitrary commands on the site in the context of the target user. An attacker who successfully exploited this vulnerability would need to send a specially crafted link and convince a user to click the link. In all cases, however, an attacker would have no way to force a user to visit the Web site. Instead, an attacker would have to persuade a user to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes the user to the vulnerable Web site.This security update is rated Important for Visual Studio 2010 and Visual Studio 2010 SP1. For more information, see the subsection, Affected and Non-Affected Software, in this section.The update addresses the vulnerability by modifying the way that the Team Foundation Server site validates input parameters. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.Known Issues. None
Vulnerabilities addressed in this bulletin:

XSS Vulnerability

A reflected XSS vulnerability exists in Visual Studio Team Foundation Server that could allow an attacker to inject a client-side script into the user's instance of Internet Explorer or any web browser using Team Foundation Server web access. 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.
CVE-2012-1892

Bulletin details at Microsoft.com