SB2016081005 - Secure Boot bypass in Microsoft Windows

Description

This security bulletin contains information about 1 security vulnerability.

1) Secure Boot feature bypass (CVE-ID: CVE-2016-3320)

The vulnerability allows a local user to bypass security restrictions and gain elevated privileges on vulnerable system.

The vulnerability exists due Windows Secure Boot incorrectly loads boot manager. A local user with physical access to computer and local administrative rights can disable code integrity checks, allowing test-signed executables and drivers to be loaded onto a target device, and bypass Secure Boot Integrity Validation for BitLocker and Device Encryption security features.

Successful exploitation of this vulnerability will allow a local user to gain complete access to vulnerable system.

Remediation

Install update from vendor's website.

References

• https://technet.microsoft.com/en-us/library/security/ms16-100.aspx