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In March 2018, Intel announced that they had developed hardware fixes for Meltdown and Spectre-V2 only, but not Spectre-V1. [ 9 ] [ 10 ] [ 11 ] The vulnerabilities were mitigated by a new partitioning system that improves process and privilege-level separation.
In early January 2018, it was reported that all Intel processors made since 1995 [2] [3] (besides Intel Itanium and pre-2013 Intel Atom) have been subject to two security flaws dubbed Meltdown and Spectre. [4] [5] The impact on performance resulting from software patches is "workload-dependent".
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 ...
The Meltdown and Spectre CPU vulnerabilities hung like a shadow over the festivities of CES. What's typically a celebration of consumer electronics was instead a stark reminder of just how far ...
The vulnerabilities were dubbed Spectre and Meltdown , and provided malicious actors with avenues to access sensitive data -- such as usernames and passwords -- even if stored in protected memory ...
Speculative execution exploit Variant 4, [8] is referred to as Speculative Store Bypass (SSB), [1] [9] and has been assigned CVE-2018-3639. [7] SSB is named Variant 4, but it is the fifth variant in the Spectre-Meltdown class of vulnerabilities.
A listing of affected Intel hardware has been posted. [11] [12] Foreshadow is similar to the Spectre security vulnerabilities discovered earlier to affect Intel and AMD chips, and the Meltdown vulnerability that also affected Intel. [7] AMD products are not affected by the Foreshadow security flaws. [7]
Intel Software Guard Extensions (SGX) is a set of instruction codes implementing trusted execution environment that are built into some Intel central processing units (CPUs). They allow user-level and operating system code to define protected private regions of memory, called enclaves .