Critical Intel CPU Bug – Meltdown and Spectre Vulnerabilities
CPU hardware implementations are vulnerable to side-channel attacks referred to as Meltdown and Spectre.Earlier this week, serious security problem – CPU Bug has been found in the Intel/AMD/ARM CPUs. According to various teams including Google Project Zero, CPU data cache timing can be abused efficiently to leak information out of mis-speculated execution, leading to (at worst) arbitrary virtual memory read vulnerabilities across local security boundaries in various contexts. These vulnerabilities are known by name ‘Meltdown’ and ‘Spectre’.
You can read more about attack from this link
There are 3 known variants for this CPU Bug: