SB2020101348 - Multiple vulnerabilities in Microsoft Windows Application Compatibility Client Library

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-16876)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.

To exploit the vulnerability, an attacker would first need code execution on a victim system.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-16920)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.

To exploit the vulnerability, an attacker would first need code execution on a victim system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16876
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16920