grub2: modules built in on EFI builds that allow loading arbitrary code, circumventing secure boot

It was discovered that grub2 builds for EFI systems contained modules that were not suitable to be loaded in a Secure Boot environment. An attacker could use this flaw to circumvent the Secure Boot mechanisms and load non-verified code. Attacks could use the boot menu if no password was set, or t...

The vulnerability of the Windows operating system, which allows a perpetrator to bypass the secure loading mechanism

The vulnerability of the Windows operating system’s kernel is related to security configuration errors. Exploiting this vulnerability allows a malicious actor to bypass the trusted boot process by using a specially crafted BCD configuration...

PT-2015-7636

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the fixed version Description The issue allows local users to bypass intended securelevel/secureboot restrictions. This is achieved by leveraging improper handling of the secure boot flag across kexec reboot when...

Microsoft Windows Trusted Boot Security Feature Bypass Vulnerability

Microsoft Windows is a series of operating systems released by Microsoft Corporation in the United States. kernel is one of the kernels. A security feature bypass vulnerability exists in Microsoft Windows. An attacker can exploit this vulnerability to disable code integrity checking, load signed...

BIOS implementations permit unsafe SMM function calls to memory locations outside of SMRAM

Overview Multiple BIOS implementations permit unsafe System Management Mode SMM function calls to memory locations outside of SMRAM. Description Multiple BIOS implementations permit unsafe System Management Mode SMM function calls to memory locations outside of SMRAM. According to Corey Kallenber...

Multiple Product UEFI System Local Security Bypass Vulnerabilities

UEFI is a standard that details a type of interface. This interface is used to automatically load the operating system from a pre-booted operating environment onto an operating system. A local security bypass vulnerability exists in multiple product UEFI systems where a boot script is used to...