Input validation error in Windows and Windows Server - CVE-2023-21690
Published: February 14, 2023
Vulnerability identifier: #VU72196
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-21690
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the system and execute arbitrary code.
Successful exploitation of the vulnerability requires that NPS is running on the Windows Server and has a network policy configured that allows PEAP.
How to mitigate CVE-2023-21690
Install updates from vendor's website.