If You Do Use SGX Then Expect It To Run Slower Soon
It’s time for yet another architectural vulnerability and this time it is Intel’s turn again. The same researchers that ruined your peace of mind with Meltdown and Spectre have discovered another unique attack which Intel’s Software Guard Extensions are vulnerable to. As with the AMD vulnerability revealed earlier in the week, the attack is rather complex to carry out and is unlikely to be seen in the wild so Intel will not be releasing a microcode update. They will however update SGX to protect against this and that mitigation will indeed slow the speed at which the chips will be able to perform.
You can learn more about the Load Value Injection attack, what chips are likely vulnerable and how to deal with it at The Register.
The researchers in their paper make clear the chip maker isn't quite so blasé about the risks where SGX comes into play: "Intel considers LVI particularly severe for SGX…"