# MA-839.062022: MyCERT Advisory - Microsoft Releases Workaround Guidance for MSDT Follina Vulnerability

**Date:** 08 Jun 2022  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-839.062022  
**Advisory ID:** MA-839.062022

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**1.0 Introduction**
Microsoft has released workaround guidance to address a remote code execution (RCE) vulnerability (CVE-2022-30190), dubbed as "Follina" that affecting the Microsoft Support Diagnostic Tool (MSDT) in Windows. According to Microsoft, CVE-2022-30190 is a remote code execution vulnerability that 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.
**2.0 Impact**
A remote, unauthenticated attacker could exploit this vulnerability to take control of an affected system.
**3.0 Affected Products**
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows RT 8.1
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2016 (Server Core installation)
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 for 32-bit Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 11 for ARM64-based Systems
Windows 11 for x64-based Systems
Windows Server, version 20H2 (Server Core Installation)
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for x64-based Systems
Windows Server 2022 Azure Edition Core Hotpatch
Windows Server 2022 (Server Core installation)
Windows Server 2022
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019 (Server Core installation)
Windows Server 2019
Windows 10 Version 1809 for ARM64-based Systems
Windows Server 2019
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
**4.0 Recommendations**
MyCERT strongly urges users and administrators to review Microsoft's Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability and apply the necessary workaround until a patch is issued to fix the problem. Kindly refer to the below URL:
• <https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/>
• <https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-30190>
Generally, MyCERT advises the users of this devices to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact MyCERT through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 09:00 -18:00 MYT 
Web: <https://www.mycert.org.my> 
Twitter: <https://twitter.com/mycert> 
Facebook: <https://www.facebook.com/mycert.org.my>
**5.0    References**
• <https://www.cisa.gov/uscert/ncas/current-activity/2022/05/31/microsoft-releases-workaround-guidance-msdt-follina-vulnerability>
• <https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/>
• <https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-30190>
• <https://unit42.paloaltonetworks.com/cve-2022-30190-msdt-code-execution-vulnerability/>
• <https://www.bleepingcomputer.com/news/security/new-microsoft-office-zero-day-used-in-attacks-to-execute-powershell/>
• <https://doublepulsar.com/follina-a-microsoft-office-code-execution-vulnerability-1a47fce5629e>
• <https://www.huntress.com/blog/microsoft-office-remote-code-execution-follina-msdt-bug>