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Meltdown exploits a race condition, inherent in the design of many modern CPUs.This occurs between memory access and privilege checking during instruction processing. . Additionally, combined with a cache side-channel attack, this vulnerability allows a process to bypass the normal privilege checks that isolate the exploit process from accessing data belonging to the operating system and other ...
Transient execution CPU vulnerabilities are vulnerabilities in which instructions, most often optimized using speculative execution, are executed temporarily by a microprocessor, without committing their results due to a misprediction or error, resulting in leaking secret data to an unauthorized party.
Spectre is one of the two original speculative execution CPU vulnerabilities (the other being Meltdown), which involve microarchitectural side-channel attacks. These affect modern microprocessors that perform branch prediction and other forms of speculation.
Pages in category "Transient execution CPU vulnerabilities" ... Meltdown (security vulnerability) Microarchitectural Data Sampling; P. Pacman (security vulnerability) R.
Speculative Store Bypass (SSB) (CVE-2018-3639) is the name given to a hardware security vulnerability and its exploitation that takes advantage of speculative execution in a similar way to the Meltdown and Spectre security vulnerabilities. [1] It affects the ARM, AMD and Intel families of processors.
In January 2018, the Meltdown vulnerability was published, known to affect Intel's x86 CPUs and ARM Cortex-A75. [22] [23] It was a far more severe vulnerability than the KASLR bypass that KAISER originally intended to fix: It was found that contents of kernel memory could also be leaked, not just the locations of memory mappings, as previously thought.
In 2017, two CPU vulnerabilities (dubbed Meltdown and Spectre) were discovered, which can use a cache-based side channel to allow an attacker to leak memory contents of other processes and the operating system itself. A timing attack watches data movement into and out of the CPU or memory on the hardware running the cryptosystem or algorithm ...
Project Zero was involved in discovering the Meltdown and Spectre vulnerabilities affecting many modern CPUs, which were discovered in mid-2017 and disclosed in early January 2018. [25] The issue was discovered by Jann Horn independently from the other researchers who reported the security flaw and was scheduled to be published on 9 January ...