Input validation error in Windows and Windows Server - CVE-2023-21757
Published: January 10, 2023
Vulnerability identifier: #VU70923
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-21757
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 perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in Windows Layer 2 Tunneling Protocol (L2TP). A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.
How to mitigate CVE-2023-21757
Install updates from vendor's website.