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Linux-Cron Privesc. Hijacking a Writable Root Script
Mission
Check the permissions of a cron script that root executes periodically. If a regular user can write to it, think about what code will run the next time it fires.
Not started
Hints
Hint 1Show
Check /etc/crontab for jobs that root executes
Hint 2Show
Use ls -la to check the script's write permissions
Hint 3Show
If it is writable, append your own command and wait for the next run