Monday, December 27, 2021 [Tweets] [Favorites]

Firefox 95’s RLBox

Jack Wallen (via Hacker News, MacRumors):

RLBox is a new method of sandboxing, which makes it easy to efficiently isolate subcomponents and make Firefox more secure. RLBox uses WebAssembly to isolate possible buggy code.

[…]

How RLBox works is complicated, but it breaks down by first compiling a process into WebAssembly, and then the converted process is then re-converted into native code. What this does is prevent code from moving between different portions of a program and limits access to only specific areas of system memory.

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