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Category:   Application (Generic)  >   Microsoft Visual Studio Vendors:   Microsoft
Microsoft Visual Studio Access Control Flaw Lets Remote Users Conduct Cross-Site Request Forgery Attacks to Remove Two-Factor Authentication
SecurityTracker Alert ID:  1034987
SecurityTracker URL:  http://securitytracker.com/id/1034987
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Feb 10 2016
Impact:   Modification of user information

Version(s): 2013, 2015
Description:   A vulnerability was reported in Microsoft Visual Studio. A remote user can conduct cross-site request forgery attacks to remove two-factor authentication.

A remote user can create a specially crafted HTML page or URL that, when loaded by the target authenticated user, will take actions on the target interface acting as the target user. A remote user can cause the target authenticated user's telephone number to be removed from the Identity Database. As a result, two-factor authentication mechanisms based on a telephone number will be removed.

Password authentication is not affected.

Applications that were generated with a vulnerable template are affected.

Michael Reizelman reported this vulnerability.

Impact:   A remote user can take actions on the target system acting as the target authenticated user to remove two-factor authentication.
Solution:   The vendor has described how to modify the templates to fix the vulnerability.

The vendor's advisory is available at:

https://technet.microsoft.com/en-us/library/security/3137909

Vendor URL:  technet.microsoft.com/en-us/library/security/3137909 (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Windows (Any)

Message History:   None.


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