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810 posts

Ultimate Geek
+1 received by user: 230


Topic # 225660 29-Nov-2017 10:22
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So it looks like a glaring and brutal flaw has been exposed in High Sierra which allows root access with a blank password.

 

 

 

https://www.theregister.co.uk/2017/11/28/root_access_bypass_macos_high_sierra/

 

https://www.macrumors.com/2017/11/28/macos-high-sierra-bug-admin-access/

 

 

 

Anyone running High Sierra should address this ASAP to secure their Apple computer...

 

Someone will be getting fired for this one surely!





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752 posts

Ultimate Geek
+1 received by user: 132

Trusted

  Reply # 1909392 29-Nov-2017 10:24
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Just tried it on my MacBook. Works as intended.

 

FileVault should mitigate this partially if the machine is off, but still not good. I'd imagine actually setting a password on the root account would also solve this (but my work machine is still on 10.12 so can't confirm).





 


74 posts

Master Geek
+1 received by user: 20


  Reply # 1909393 29-Nov-2017 10:25
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Yeah this is a big one. Hopefully patched quickly. 

 

Haven't upgraded to HS yet because the new file system doesn't support Fusion Drives yet.

 

Guess it's good I waited.


74 posts

Master Geek
+1 received by user: 20


  Reply # 1909394 29-Nov-2017 10:26
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As a side note, does anyone know if this vulnerability can be exploited by an application? I think to be safe, I'd advise holding off installing or upgrading *anything* until it is patched.


74 posts

Master Geek
+1 received by user: 20


  Reply # 1909466 29-Nov-2017 11:53
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Just as a follow up, some are recommending setting a 'root' password as an interim measure. Although the argument is that this is actually less secure as there should be no root account at all.

 

https://news.ycombinator.com/item?id=15800676

 

 


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