From: Gregg N 

Gregg N wrote:
>
>> It's a pretty standard technique, you replace some system file that user
>> permissions gives you access to replace, then you reboot and that
>> file runs
>> as system now giving you system level access.

If this were possible, it would defeat the whole purpose of having user
permissions. Could you give a specific example that does not involve
exploiting an unpatched vulnerability?

Gregg

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