This exploits a command execution in Pi-Hole <= 4.4. A new blocklist is added, and then an update is forced (gravity) to pull in the blocklist content. PHP content is then written to a file within the webroot. Phase 1 writes a sudo pihole command to launch teleporter, effectively running a priv esc. Phase 2 writes our payload to teleporter.php, overwriting, the content. Lastly, the phase 1 PHP file is called in the web root, which launches our payload in teleporter.php with root privileges.
PHP
php
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