Re:Zenbleed
by loeg on Monday July 24, 2023 @01:00PM
(#36851051)
> Thankfully the exploit is highly dependent on a specific asm routine so exploiting it from JS or WASM in a browser should be extremely difficult. Otherwise a nefarious tab left open for hours in the background could exfiltrate without an issue.
What about it is very bold? The instruction sequence mentioned seems pretty reasonable and not at all out of the question for a JavaScript JIT to generate.
At least one commentor here claims to be able to reproduce this with javascript: https://news.ycombinator.com/item?id=36849767 .