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7 Meltdown and Spectre level vulnerabilities discovered

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A research team—including many of the original researchers behind Meltdown, Spectre, and the related Foreshadow and BranchScope attacks—has published a new paper disclosing yet more attacks in the Spectre and Meltdown families. The team has discovered seven new Meltdown-BR exploiting the meltdown effect x86 bound instruction on Intel and AMD and Meltdown-PK exploiting the Meltdown-type effect on memory protection keys on Intel and five variants belonging to Spectre attack exploiting Spectre-PHT and Spectre-BTB attacks.

These attacks are called a sound and extensible systematisation of transient execution.

All the seven attacks are affected by the three major processor vendors Intel, AMD and ARM that allows an attacker to gain access to vulnerable system data, fulfilling predictions made when the Spectre and Meltdown flaws were reported at the beginning of the year.

Back at the start of the year, a set of attacks that leveraged the speculative execution capabilities of...(continued)
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