News for hackers. Stuff that matters.

A comment on The hijacking flaw that lurked in Intel chips is worse than anyone thought. Parent comment

Re:The hijacking flaw that lurked in Intel chips is worse th... by pritambaral on Sunday May 07, 2017 @05:05AM (#14284550)
> ring -2 mode

ME runs below the SMM. So ring -3 or lower.

[ Parent | on HN ]
Re:The hijacking flaw that lurked in Intel chips is worse th... by qb45 on Sunday May 07, 2017 @05:17AM (#14284585)
ME is a separate processor, not a "ring" on the x86.

All this talk about "privilege level above normal software" and "ring -7" just muddies the water. It simply is a physically separate core running its own software which has access to all RAM and all PCIe devices and can program the Intel NIC to silently redirect selected packets away from the x86 cores to itself.

[ Parent | on HN ]