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The vulnerability exists when the Driver Execution Environment (DXE) is active after a successful Power On Self Test (POST) in the UEFI firmware (also known as the BIOS). ). The UEFI's boot logo is replaced with the exploit payload at this point, and the exploit can then take control of the sys
In 2022, security researchers discovered a vulnerability in the Advanced Programmable Interrupt Controller (APIC) that allows for an attacker with root/admin privileges to gain access to encryption keys via the APIC by inspecting data transfers from L1 and L2 cache. [40] This vulnerability is the first architectural attack discovered on x86 CPUs.
An attacker could, for example, use a social engineering attack and send a "lucky winner" a rogue Thunderbolt device. Upon connecting to a computer, the device, through its direct and unimpeded access to the physical address space, would be able to bypass almost all security measures of the OS and have the ability to read encryption keys, install malware, or control other system devices.
UEFI applications can be developed and installed independently of the original equipment manufacturers (OEMs). A type of UEFI application is an OS boot loader such as GRUB, rEFInd, Gummiboot, and Windows Boot Manager, which loads some OS files into memory and executes them. Also, an OS boot loader can provide a user interface to allow the ...
In computer security, a cold boot attack (or to a lesser extent, a platform reset attack) is a type of side channel attack in which an attacker with physical access to a computer performs a memory dump of a computer's random-access memory (RAM) by performing a hard reset of the target machine.
A complete specification is intended to consist of a platform-specific protection profile which references a common three part TPM 1.2 library. [5] In practice, only a PC Client protection profile was created for TPM 1.2. Protection profiles for PDA and cellular were intended to be defined, [5] but were never published.
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