An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
| Link | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0973 | vendor advisory |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0973 | patch vendor advisory |