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how can I disable/ enable webassembly in firefox? (lemmy.ml)

submitted 1 year ago by beta_tester@lemmy.ml to c/firefox@lemmy.ml

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go to about:config
set javascript.options.wasm to true or false to enable or disable webassembly

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[–] beta_tester@lemmy.ml 4 points 1 year ago (1 children)

Webassembly introduces security risks. I'm no pro at this and can't explain it in more detail. But mull (firefox fork) has it disabled by default and some sites will break because there's no webassembly.

[–] moreeni@lemm.ee 3 points 1 year ago (1 children)

Could you elaborate? Judging from the project's page, it seems that they take security into mind too https://webassembly.org/docs/security/

[–] beta_tester@lemmy.ml 3 points 1 year ago

I cna't elaborate but I can point you forward

Here are the arkenfox settings https://arkenfox.github.io/gui/?s=wasm arkenfox disables webassembly. Look for javascript.options.wasm .

Following is the description there

Vulnerabilities [1] have increasingly been found, including those known and fixed

in native programs years ago [2]. WASM has powerful low-level access, making
certain attacks (brute-force) and vulnerabilities more possible
[STATS] ~0.2% of websites, about half of which are for crytopmining / malvertising [2][3]
[1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm
[2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly
[3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes

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