A vulnerability was found in Microsoft Windows up to Server 2019 (Operating System). It has been declared as critical. This vulnerability affects an unknown code block of the component AppX Deployment Server. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 03/12/2019. The weakness was presented 03/12/2019 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated in cooperation with the vendor. This vulnerability was named CVE-2019-0766 since 11/26/2018. The attack can be initiated remotely. The requirement for exploitation is a single authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/13/2024). The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

An elevation of privilege vulnerability exists in Windows AppX Deployment Server that allows file creation in arbitrary locations.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 91510 (Microsoft Windows Security Update March 2019).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 10 1607
• 10 1703
• 10 1709
• 10 1803
• 10 1809
• Server 1709
• Server 1803
• Server 2016
• Server 2019

License

• commercial

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