Microsoft Azure Active Directory Passport CVE-2016-7191 Authentication Bypass Vulnerability

Description

Microsoft Azure Active Directory Passport is prone to an authentication-bypass vulnerability. An attacker can exploit this issue to bypass certain security restrictions and gain unauthorized access to the application. Versions prior to Azure Active Directory Passport 1.4.6 and 2.0.1 are vulnerable.

Technologies Affected

• Microsoft Azure Active Directory Passport 1.0
• Microsoft Azure Active Directory Passport 1.4.5
• Microsoft Azure Active Directory Passport 2.0.0

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.