CVE-2023-21556

Published: Jan 10, 2023Modified: Nov 21, 2024

8.1

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.2 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

Affected (31)

Products: Microsoft: Windows 10 1607, Windows 10 1809, Windows 10 20h2, Windows 10 21h2, Windows 10 22h2, Windows 11 21h2, Windows 11 22h2, Windows 7, Windows 8.1, Windows Rt 8.1, Windows Server 2008, Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows Server 2022

15 products

Windows 10 1607

Windows 10 1809

Windows 10 20h2

Windows 10 21h2

Windows 10 22h2

Windows 11 21h2

Windows 11 22h2

Windows Server 2008

Windows Server 2012

Windows Server 2016

Windows Server 2019

Windows Server 2022

Configuration A

31 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1607	All versions
Microsoft Windows 10 1607	All versions
Microsoft Windows 10 1809	All versions
Microsoft Windows 10 1809	All versions
Microsoft Windows 10 1809	All versions
Microsoft Windows 10 20h2	All versions
Microsoft Windows 10 20h2	All versions
Microsoft Windows 10 20h2	All versions
Microsoft Windows 10 21h2	All versions
Microsoft Windows 10 21h2	All versions
Microsoft Windows 10 21h2	All versions
Microsoft Windows 10 22h2	All versions
Microsoft Windows 10 22h2	All versions
Microsoft Windows 10 22h2	All versions
Microsoft Windows 11 21h2	All versions
Microsoft Windows 11 21h2	All versions
Microsoft Windows 11 22h2	All versions
Microsoft Windows 11 22h2	All versions
Microsoft Windows 7	All versions
Microsoft Windows 7	All versions
Microsoft Windows 8.1	All versions
Microsoft Windows 8.1	All versions
Microsoft Windows Rt 8.1	All versions
Microsoft Windows Server 2008	All versions
Microsoft Windows Server 2008	All versions
Microsoft Windows Server 2008	Version r2 sp1
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Server 2016	All versions
Microsoft Windows Server 2019	All versions
Microsoft Windows Server 2022	All versions

Related CWEs

Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

References (2)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21556

Source: secure@microsoft.com

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21556

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.