CVE-2023-24938 : Security Advisory and Response

This CVE record relates to a Windows CryptoAPI Denial of Service Vulnerability in Microsoft products.

Understanding CVE-2023-24938

This vulnerability was published on June 13, 2023, affecting multiple Microsoft products such as Windows 10, Windows Server, Windows 11, and more.

What is CVE-2023-24938?

CVE-2023-24938 is a Denial of Service vulnerability in Windows CryptoAPI, impacting various versions of Microsoft products.

The Impact of CVE-2023-24938

The vulnerability has a base severity rating of MEDIUM with a CVSS base score of 6.5. The attack vector does not require user interaction and can cause a system to become unresponsive, affecting the availability of the targeted Windows systems.

Technical Details of CVE-2023-24938

This section delves into the specifics of the vulnerability.

Vulnerability Description

The Windows CryptoAPI Denial of Service Vulnerability allows a remote, unauthenticated attacker to send crafted requests to a targeted system, leading to a denial of service condition.

Affected Systems and Versions

Various Microsoft products are affected, including Windows 10 Version 1809, Windows Server 2019, Windows Server 2022, Windows 11 versions 21H2 and 22H2. The vulnerability impacts specific versions of these products as mentioned.

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker sending specially crafted requests to the affected systems, causing a denial of service and impacting the system's availability.

Mitigation and Prevention

Protecting your systems from CVE-2023-24938 involves taking immediate steps and implementing long-term security practices.

Immediate Steps to Take

System administrators are advised to apply security updates provided by Microsoft to mitigate the vulnerability. It is crucial to keep systems up to date with the latest patches to prevent exploitation.

Long-Term Security Practices

In the long term, organizations should follow best security practices such as network segmentation, restricting access to critical systems, monitoring for unusual network activity, and conducting regular security assessments.

Patching and Updates

Ensure that all affected Microsoft products are updated with the latest security patches released by the vendor to address CVE-2023-24938. Regularly checking for updates and applying them promptly is essential for maintaining a secure system environment.