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June 25, 2018 12:35 am

Changes in WebAssembly Could Render Meltdown and Spectre Browser Patches Useless

Catalin Cimpanu, reporting for BleepingComputer: Upcoming additions to the WebAssembly standard may render useless some of the mitigations put up at the browser level against Meltdown and Spectre attacks, according to John Bergbom, a security researcher at Forcepoint. WebAssembly (WA or Wasm) is a new technology that shipped last year and is currently supported within all major browsers, such as Chrome, Edge, Firefox, and Safari. The technology is a compact binary language that a browser will convert into machine code and run it directly on the CPU. Browser makers created WebAssembly to improve the speed of delivery and performance of JavaScript code, but as a side effect, they also created a way for developers to port code from other high-level languages (such as C, C++, and others) into Wasm, and then run it inside a browser. All in all, the WebAssembly standard is viewed as a success in the web dev community, and there've been praises for it all around.

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Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/K_La9T8xE_A/changes-in-webassembly-could-render-meltdown-and-spectre-browser-patches-useless

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