I remember they fixed that one, but plundervolt is more finely targeted, like a traditional glitch attack. The fun thing with this attack is we just need a little bit of corruptions everywhere, and some broken signatures might make it through!
DVFS aside, there's plenty of ways to stress and CPU and cause random errors. I don't know whether their RSA implementation protects against this attack, though.
https://www.usenix.org/conference/usenixsecurity17/technical...
The researchers made an app that can run as a normal user and extract the hardware enclave’s private key.