Microsoft Windows up to Server 2019 Kernel privileges management

Summaryinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows up to Server 2019. This vulnerability affects unknown code of the component Kernel. Such manipulation leads to privileges management. This vulnerability is referenced as CVE-2020-0672. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows up to Server 2019 (Operating System) and classified as critical. Affected by this issue is some unknown functionality of the component Kernel. 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. CVE summarizes:

An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka 'Windows Kernel Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0668, CVE-2020-0669, CVE-2020-0670, CVE-2020-0671.

The weakness was published 02/11/2020 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2020-0672. The attack may be launched remotely. A simple authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/11/2020). The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

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

Similar entries are available at VDB-149904, VDB-149903, VDB-149902 and VDB-149901. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 10 1709
• 10 1803
• 10 1809
• 10 1903
• 10 1909
• Server 1803
• Server 1903
• Server 1909
• Server 2019

License

• commercial

Website

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

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Once again VulDB remains the best source for vulnerability data.

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