Microsoft Windows L2TP DoS Vulnerability
CVE-2023-21757 Published on January 10, 2023

Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability
Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability

Vendor Advisory NVD

Vulnerability Analysis

Exploitation:

NONE

Automatable:

YES

Technical Impact:

PARTIAL

Weakness Type

NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.

Products Associated with CVE-2023-21757

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Microsoft Windows Server 2008

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Microsoft Windows Server 2012

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Microsoft Windows 10

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Microsoft Windows 8.1

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Microsoft Windows Server 2016

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Microsoft Windows 7

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Microsoft Windows Rt 8 1

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Microsoft Windows Server 2019

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Microsoft Windows Server 2022

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Microsoft Windows 11

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Affected Versions

• Version 10.0.17763.0 and below 10.0.17763.3887 is affected.

• Version 10.0.0 and below 10.0.17763.3887 is affected.

• Version 10.0.17763.0 and below 10.0.17763.3887 is affected.

• Version 10.0.17763.0 and below 10.0.17763.3887 is affected.

• Version 10.0.20348.0 and below 10.0.20348.1487 is affected.

• Version 10.0.0 and below 10.0.19042.2486 is affected.

• Version 10.0.0 and below 10.0.22000.1455 is affected.

• Version 10.0.19043.0 and below 10.0.19044.2486 is affected.

• Version 10.0.22621.0 and below 10.0.22621.1105 is affected.

• Version 10.0.19045.0 and below 10.0.19045.2486 is affected.

• Version 10.0.10240.0 and below 10.0.10240.19685 is affected.

• Version 10.0.14393.0 and below 10.0.14393.5648 is affected.

• Version 10.0.14393.0 and below 10.0.14393.5648 is affected.

• Version 10.0.14393.0 and below 10.0.14393.5648 is affected.

• Version 6.1.0 and below 6.1.7601.26321 is affected.

• Version 6.1.0 and below 6.1.7601.26321 is affected.

• Version 6.3.0 and below 6.3.9600.20778 is affected.

• Version 6.0.6003.0 and below 6.0.6003.21872 is affected.

• Version 6.0.6003.0 and below 6.0.6003.21872 is affected.

• Version 6.0.6003.0 and below 6.0.6003.21872 is affected.

• Version 6.1.7601.0 and below 6.1.7601.26321 is affected.

• Version 6.1.7601.0 and below 6.1.7601.26321 is affected.

• Version 6.2.9200.0 and below 6.2.9200.24075 is affected.

• Version 6.2.9200.0 and below 6.2.9200.24075 is affected.

• Version 6.3.9600.0 and below 6.3.9600.20778 is affected.

• Version 6.3.9600.0 and below 6.3.9600.20778 is affected.

Exploit Probability