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Login Vulnerability Found On MacOS High Sierra

Anyone can login as “root” with empty password on MacOS High Sierra






 

Try this:

Solution 1:

On startup, click on "Other"

Enter username: root and leave the password empty. Press enter. (Try twice)

If you're able to log in (hurray, you're the admin now), then head over to System Preferences>Users & Groups and create a new Admin account.

Now restart and login to the new Admin Account (you may need a new Apple Id). Once you're logged into this new Admin Id, you can again proceed to your System Preferences>Users & Groups. Open the Lock Icon with your new Admin ID/Password. Assign "Allow user to administer this computer" to your original Apple ID. Restart.

Now login with your original Apple Id. (In case you wish to remove the "Other" login option on startup read this: https://support.apple.com/en-in/HT204012

Solution 2:

If you're unable to login at startup using username: root and empty password, then login with your existing account (standard user).

Again, head over to System Preferences>Users & Groups. Click on the Lock Icon. When prompted for username and password, type username: root and leave the password empty. Press enter. This might throw an error, but try again immediately with the same username: root and empty password. This should unlock the Lock Icon. If it does, try Solution 1 next.

P.S. Solution 2 worked for me. No idea how or why. Hope this helps.

Anyone trying this out needs to be careful because you are enabling the root account without a password. You should change the root password to protect against this vulnerability until Apple resolves it. Disabling the root account will make your computer vulnerable again even if you set a password.

Original Source: https://forums.developer.apple.com/thread/79235 and https://www.reddit.com/r/apple/comments/7g6y06/anyone_can_login_as_root_with_empty_password_on/

 

 



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Dust off your computer regularly to prevent its premature demise



Dust can spell the end for a computer when allowed to build up, blocking the vent and forcing the cooling fan to spin faster. This means more noise and, worst case, an earlier device failure.

That's why users should regularly clean dust and dirt off their computers or notebooks, advises the German tech magazine PC Go.

A fine brush and a vacuum cleaner can help.

Users should opt for a low suction level and the smallest possible nozzle size. Special attachments are also available for little money.


One important thing to keep in mind: Before cleaning the inside of a computer, it's essential that users unplug the power cord.

They should also keep some distance from the sensitive components of the computer at all times.

Special care should be taken with the fan impellers: If they start moving during vacuuming, the rotation can generate tension. In the worst case, this could damage the motherboard, "PC Go" warns. To prevent this from happening, try using a cotton swab to block them.

But even with the finest nozzle, it may still be impossible to get to every corner. In such cases, it's better to blow off the dust.

Small bellows from a local camera shop are one option. Or you could go for a gas duster from a computer store.

Meanwhile, liquid or moist cleaning agents and electrostatic cleaning brushes should only be used for cleaning the exterior of a computer. — dpa

Read more at http://www.thestar.com.my/tech/tech-news/2017/10/30/dust-off-your-computer-regularly-to-prevent-its-premature-demise/#xha7BYHtmkL3iPVx.99


Original Date: Oct 30 2017

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