MS11-100 - Critical : Vulnerabilities in .NET Framework Could Allow Elevation of Privilege...

[Guest Microsoft Security]

Severity Rating: Critical

Revision Note: V1.1 (December 30, 2011): Added entry to the Update FAQ to address security-related changes to functionality contained in this update and added mitigation for CVE-2011-3414

Summary: This security update resolves one publicly disclosed vulnerability and three privately reported vulnerabilities in Microsoft .NET Framework. The most severe of these vulnerabilities could allow elevation of privilege if an unauthenticated attacker sends a specially crafted web request to the target site. An attacker who successfully exploited this vulnerability could take any action in the context of an existing account on the ASP.NET site, including executing arbitrary commands. In order to exploit this vulnerability, an attacker must be able to register an account on the ASP.NET site, and must know an existing user name.

 

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