Improper Authentication in Azure Active Directory Connect - CVE-2021-36949
Published: August 10, 2021 / Updated: August 15, 2021
Vulnerability identifier: #VU55733
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2021-36949
CWE-ID: CWE-287
Exploitation vector: Adjecent network
Exploit availability:
Public exploit is available
Vendor: Microsoft
Affected software:
Azure Active Directory Connect
Azure Active Directory Connect
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests in the Microsoft Azure Active Directory Connect. A remote authenticated attacker on the local network can perform a man-in-the-middle (MitM) attack and gain unauthorized access to the application.
How to mitigate CVE-2021-36949
Install updates from vendor's website.