Microsoft Windows up to Server 2019 Language Pack Installer privileges management

Summaryinfo

A vulnerability has been found in Microsoft Windows and classified as critical. This issue affects some unknown processing of the component Language Pack Installer. The manipulation leads to privileges management. This vulnerability is listed as CVE-2020-0822. The attack must be carried out locally. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) and classified as critical. This issue affects an unknown part of the component Language Pack Installer. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An elevation of privilege vulnerability exists when the Windows Language Pack Installer improperly handles file operations, aka 'Windows Language Pack Installer Elevation of Privilege Vulnerability'.

The weakness was presented 03/10/2020 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2020-0822. An attack has to be approached locally. A simple authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/11/2020). MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

An elevation of privilege vulnerability exists when the Windows Language Pack Installer improperly handles file operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

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

See VDB-151137, VDB-151136, VDB-151135 and VDB-151134 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 7 SP1
• 8.1
• 10
• 10 1607
• 10 1709
• 10 1803
• 10 1809
• 10 1903
• 10 1909
• RT 8.1
• Server 1803
• Server 1903
• Server 1909
• Server 2008 R2 SP1
• Server 2008 SP2
• Server 2012
• Server 2012 R2
• Server 2016
• Server 2019

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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