How To FIX CVE-2016-4484 on Ubuntu 16.04.1 LTS?

Posted November 18, 2016 3k views
SecurityUbuntu 16.04

Hello Digital Ocean Community -

I have done the following:

root@www:~# sed -i ’s/GRUBCMDLINELINUXDEFAULT=“/GRUBCMDLINELINUXDEFAULT="panic=5 /’ /etc/default/grub

root@www:~# grub-install /dev/vda

root@www:~# reboot

Is this SAFE for security bug if I do this before the patch?

Anyone know how I can fix this issue? Thank you in advance for any help!

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1 answer

As I understand it, this issue can only be exploited with physical access to the machine. Since your droplets are only accessible in this fashion via the control panel’s console access when you are already authenticated on your DigitalOcean account it should not be a concern.

From my reading of the available fixes for this vulnerability, adding the panic option to your boot string should resolve it in any case.