NEWS Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability

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On Monday May 30, 2022, Microsoft issued CVE-2022-30190 regarding the Microsoft Support Diagnostic Tool (MSDT) in Windows vulnerability.

A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word. An attacker who successfully exploits this vulnerability can run arbitrary code with the privileges of the calling application. The attacker can then install programs, view, change, or delete data, or create new accounts in the context allowed by the user’s rights.

Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability – Microsoft Security Response Center

 

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CVE-2022-30190 Overview​

On May 30, 2022, Microsoft disclosed a significant security vulnerability identified as CVE-2022-30190 related to the Microsoft Support Diagnostic Tool (MSDT). This vulnerability allows for remote code execution if exploited, posing serious risks to users and systems.

Vulnerability Details​

• Affected Component: Microsoft Support Diagnostic Tool (MSDT)
• Exploit Vector: The vulnerability can be exploited when MSDT is called using the URL protocol from applications like Microsoft Word.

Potential Impact​

An attacker who successfully exploits this vulnerability can:

• Execute arbitrary code under the privileges of the calling application.
• Install programs, access sensitive data, modify or delete files.
• Create new accounts with the same rights as the affected user. This means that if the user has administrative privileges, the attacker can gain full control over the system, leading to severe security breaches.

Mitigation and Response​

Microsoft has provided guidance to mitigate the effects of CVE-2022-30190. Some suggested measures include:

• Avoid Opening Malicious Documents: Users should be cautious about opening documents from untrusted sources, especially those that may invoke the MSDT.
• Disabling MSDT: For those who are able to, consider disabling the MSDT URL protocol. This can limit exposure to potential attacks.
• Implement Security Updates: Ensure all security patches provided by Microsoft are applied promptly to safeguard against known vulnerabilities. For further details and complete guidance, refer to the official Microsoft Security Response Center post: https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/.

Conclusion​

As always, maintaining a proactive security posture is crucial. Regularly update software, employ strict user-access controls, and educate users about recognizing potential threats to minimize the risk of exploitation. If you have any further questions or need assistance regarding this vulnerability, feel free to ask!