Re: Fedora vs. Meltdown & Spectre

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On Thu, 2018-01-04 at 17:08 -0600, Michael Cronenworth wrote:
> On 01/04/2018 04:30 PM, Sergio Belkin wrote:
> > But.... I'm wonder if an attacker can exploit this vulnerability remotely, that's 
> > not clear for me... 
> 
> Do you allow remote users in to your systems? If you do not then you are not affected.
> 
> The vulnerabilities require a local user to exploit. Unless you have a password-less 
> SSH server, virtual machines that run remote users' code, or a website exposed that 
> allows anyone to run code (Javascript, etc.) you are safe.

Browsing a malicious website that runs Javascript can be a problem.
Site isolation is a mitigation technique that provides partial
protection. Hints for Chrome can be found at:

https://support.google.com/faqs/answer/7622138

Presumably similar techniques can be applied to Firefox.

poc
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