Main Vulnerability Database Vulnerabilities #VU71588

Buffer overflow in Microsoft Windows and Windows Server - CVE-2023-21712

Published: January 27, 2023

Vulnerability identifier: #VU71588

CSH Severity: Critical

CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-21712

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the Windows Point-to-Point Tunneling Protocol (PPTP) implementation. A remote non-authenticated attacker can send specially crafted packets to the affected RAS server, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2023-21712

Install updates from vendor's website.

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21712

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