SB2021041344 - Multiple vulnerabilities in Microsoft Windows Early Launch Antimalware Driver

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Security features bypass (CVE-ID: CVE-2021-27094)

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows Early Launch Antimalware Driver. A local administrator can gain elevated privileges on the target system.

2) Security features bypass (CVE-ID: CVE-2021-28447)

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows Early Launch Antimalware Driver. A local administrator can gain elevated privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27094
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28447