RLBox was originally designed by researchers from UC San Diego as well as University of Texas at Austin and Stanford University. This RLBox WebAssembly sandboxing code isn't specific to Mozilla/Firefox but can also be used by other arbitrary applications. ( Update: Mozilla also has out now another blog post on this RLBox sandboxing tech.)
There is also this blog post on Mozilla Hacks outlining this WASM-based sandboxing effort. RLBox is explained in more detail via the documentation on GitHub. RLBox will isolate the memory of the sandboxed library from that of the application/Firefox, among other security benefits. RLBox is designed to sandbox third-party libraries and is made up of a WebAssembly-based sandbox and an API for retrofitting existing application code within the sandboxed library. Making this new version interesting is the RLBox integration.Īcross all platforms the Mozilla Firefox 95.0 web browser is now using RLBox to protect against security vulnerabilities within third-party libraries. Mozilla Firefox 95.0 is now available for download ahead of its official release tomorrow.
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