What is CVE-2023-29331?

CVE-2023-29331 is a high-severity vulnerability in Microsoft .NET Framework, .NET, and Visual Studio that can lead to a Denial of Service (DoS) attack. This affects various Windows operating systems, including Windows 10 and multiple Windows Server versions. Users should apply necessary security updates to protect their systems from potential attacks.

Who is impacted by this?

CVE-2023-29331 affects users of .NET, .NET Framework, and Visual Studio, potentially leading to a Denial of Service attack. Impacted versions include .NET Framework 4.8, 4.6.2, 4.7, 4.7.1, 4.7.2, 3.5.1, 3.5, 3.0 SP2, 2.0 SP2, .NET 6.0.0, and 7.0.0. Users of PowerShell 7.3, 7.2, and Microsoft .NET Framework on various Windows operating systems, including Windows 10, Windows 11, and multiple Windows Server versions, are also affected.

What to do if CVE-2023-29331 affected you

If you're affected by the CVE-2023-29331 vulnerability, it's important to take action to protect your systems. Follow these simple steps:

1. Update the affected software to the latest version with security patches provided by Microsoft.

2. Apply the security updates mentioned in the Microsoft Security Update Guide.

3. Regularly check for updates and apply them as soon as they become available.

4. Monitor the Microsoft Security Response Center for new information or updates related to this vulnerability.

5. Follow best practices for securing systems and networks, such as using strong passwords, enabling firewalls, and keeping software up-to-date.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2023-29331 vulnerability, affecting .NET, .NET Framework, and Visual Studio, is not listed in CISA's Known Exploited Vulnerabilities Catalog. To address this high-severity Denial of Service vulnerability, users should install the security updates provided by Microsoft. No specific due date is mentioned for taking action.

Weakness Enumeration

The weakness enumeration for this vulnerability is categorized as CWE-400, which is an Uncontrolled Resource Consumption issue affecting .NET, .NET Framework, and Visual Studio.

Learn More

For a comprehensive understanding of this vulnerability, including its description, severity, technical details, and known affected software configurations, refer to the NVD page or the sources listed below.

• Microsoft Security Update Guide