0x7f · HackerTrans

9 лет назадdiscuss

Thank you for clarifying, that what I thought. Still I find that the article is not clear enough on this point, I fell that some people will read this as "OMG they can control execution remotely, this the apocalypse". I mean to an extent yes, but the results are dropped like you said and the main execution path shouldn't be affected. It only facilitate information leaks AFAIK.

0x7f

9 лет назадdiscuss

I think this part is misleading =>

"Spectre means that an attacker can control branches, so branches alone are no longer adequate for enforcing security properties."

I think they meant "Spectre means an that attacker can ABUSE branches", and in that they are right.

0x7f

9 лет назадdiscuss

I don't understand why they say Spectre can control branching in WebKit. Spectre is an information leak attack, it doesn't allow to modify memory. I could allow to find x in `is x == valueToCheck`. But if this is possible, even before Spectre it's a security issue, it's only harder to guess, and Javascript code should not be allowed to control `x`.

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