Microsoft Windows up to Server 2019 Windows Installer privileges management

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Windows. Affected by this vulnerability is an unknown functionality of the component Windows Installer. This manipulation causes privileges management. The identification of this vulnerability is CVE-2020-0814. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Windows (Operating System). Affected by this vulnerability is some unknown processing of the component Windows Installer. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An elevation of privilege vulnerability exists in Windows Installer because of the way Windows Installer handles certain filesystem operations.To exploit the vulnerability, an attacker would require unprivileged execution on the victim system, aka 'Windows Installer Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0779, CVE-2020-0798, CVE-2020-0842, CVE-2020-0843.

The weakness was shared 03/10/2020 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2020-0814. The attack can be launched remotely. Required for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k 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 in Windows Installer because of the way Windows Installer handles certain filesystem operations.

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

The entries VDB-151133, VDB-151132, VDB-151131 and VDB-151127 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion