CVE-2022-21843 : Security Advisory and Response

Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability was published by Microsoft on January 11, 2022. It has a CVSS base severity of HIGH.

Understanding CVE-2022-21843

This CVE relates to a vulnerability in the Windows Internet Key Exchange (IKE) Protocol Extensions allowing for remote code execution.

What is CVE-2022-21843?

The CVE refers to the risk of a remote attacker exploiting the IKE Protocol Extensions in Windows for executing malicious code, potentially leading to severe consequences.

The Impact of CVE-2022-21843

The vulnerability poses a high severity risk, allowing threat actors to execute arbitrary code remotely, leading to potential system compromise or denial of service.

Technical Details of CVE-2022-21843

Vulnerability Description

The vulnerability stems from a flaw in the IKE Protocol Extensions in Windows, enabling attackers to execute code remotely.

Affected Systems and Versions

Windows 10 Version 1809: All versions less than 10.0.17763.2452 are affected.
Windows Server 2019: All versions less than 10.0.17763.2452 are vulnerable.
Windows Server 2019 (Server Core installation): All versions less than 10.0.17763.2452 are impacted.
Windows 10 Version 1909, 21H1, 20H2, 11 version 21H2: Specific version ranges are affected.
Windows 10 Versions 1507, 1607: Specific vulnerable versions are identified.
Windows Server 2016, 2016 (Server Core installation), 2008 R2 Service Pack 1, 2012, 2012 (Server Core installation), 2012 R2, 2012 R2 (Server Core installation): Identified versions are at risk.
Windows 7, 7 Service Pack 1, 8.1: Specific versions are affected.

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker to execute arbitrary code through the IKE Protocol Extensions.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by Microsoft to address the vulnerability.
Implement network segmentation to reduce exposure to potential attacks.

Long-Term Security Practices

Regularly update systems with the latest security patches and updates.
Conduct security audits to identify and address weaknesses in the network infrastructure.

Patching and Updates

Ensure that all affected systems are updated with the latest patches released by Microsoft to mitigate the risk of exploitation.