Secure Boot feature bypass in Microsoft Windows and Windows Server - CVE-2016-3320

Vulnerability details

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.

Affected software

How to mitigate CVE-2016-3320

External References

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

Related Security Bulletins

• Secure Boot bypass in Microsoft Windows
• Secure Boot Security Feature Bypass Vulnerability
• Security Update for Secure Boot
• Fedora 25 update for dbxtool