8000 Disable JavaScript JIT · Issue #373 · pyllyukko/user.js · GitHub
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Disable JavaScript JIT #373

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ghost opened this issue Feb 11, 2018 · 5 comments
Open

Disable JavaScript JIT #373

ghost opened this issue Feb 11, 2018 · 5 comments

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@ghost
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ghost commented Feb 11, 2018

Has that been considered for inclusion?

https://trac.torproject.org/projects/tor/ticket/21011
@Atavic
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Atavic commented Feb 12, 2018 
javascript.options.baselinejit.content
javascript.options.ion.content

Set to false harden the browser and may cause problems with heavy JS Scripts.

@ghost
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ghost commented Feb 12, 2018

Define "problems" please.

Generally I have JS disabled completely and enable it on specific sites only (and temporarily, in a dedicated window, without running any other apps while doing that, hopefully to avoid potential Spectre attacks).

So in such a scenario - is there any benefit in hardening those prefs?

@Atavic
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Atavic commented Feb 12, 2018

Benefits are that some potential exploits are blocked:

https://packetstormsecurity.com/files/cve/CVE-2016-9079
https://packetstormsecurity.com/files/cve/CVE-2017-5375

@Atavic Atavic mentioned this issue Feb 12, 2018
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@pyllyukko
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Has that been considered for inclusion?

It is now. Thanks.

@Atavic
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Atavic commented Feb 14, 2018

Wait!
@pyllyukko these entries are not present in latest firefox. My Fault, @earthlng

@pyllyukko pyllyukko reopened this Feb 15, 2018
pyllyukko added a commit that referenced this issue Feb 15, 2018
@pyllyukko
Revert "Disable JavaScript JIT"
c8307bc 
This reverts commit 8f4199c.

#373 (comment)
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