#VU72198 Out-of-bounds read in Windows and Windows Server - CVE-2023-21691
Published: February 14, 2023
Vulnerability identifier: #VU72198
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-21691
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the affected system and read parts of heap memory from a privileged process running on the server.
Remediation
Install updates from vendor's website.