On Tuesday, April 14, Microsoft released monthly scheduled security updates for its products that fix 113 vulnerabilities, including three zero-day vulnerabilities.
3 of them was zero-day vulnerabilities and solved by Google security teams – Project Zero and Threat Analysis Group (TAG).
Those vulnerabilities are:
CVE-2020-1020 : Adobe Font Manager Library Remote Code Execution Vulnerability
A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font – Adobe Type 1 PostScript format. For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as convincing a user to open a specially crafted document or viewing it in the Windows Preview pane.
The update addresses the vulnerability by correcting how the Windows Adobe Type Manager Library handles Type1 fonts.
CVE-2020-0938 : Adobe Font Manager Library Remote Code Execution Vulnerability
This issue is similar to previous one.
CVE-2020-1027 : Windows Kernel Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application.
The security update addresses the vulnerability by ensuring the Windows Kernel properly handles objects in memory.
You can take a look at list ofupdates from this April 14 2020 Updates
