resides in a compartment at a higher hardware privilege level
than the code causing the RSE stores and loads, making it inaccessible to application code.
According to Intel, the exploit is a way for an attacker to observe the content of privileged memory, exploiting a CPU technique called speculative execution to circumvent expected privilege levels
They don't require any user interaction, they affect the default configuration, and the software runs at the highest privilege levels
possible," Tavis Ormandy, of Google's Project Zero team, wrote in a company blog post June 28.
Three user privilege levels
enhance security and management flexibility.
In developing the plan's design, American Correctional Association standards surrounding segregation unit procedures and privilege levels
served as the minimum guidelines that control units would have to exceed.