Honeywell Intermec PM23, PM42, PM43, PC23, PC43, PD43, and PC42 industrial printers before 10.11.013310 and 10.12.x before 10.12.013309 have /usr/bin/lua installed setuid to the itadmin account, which allows local users to conduct a BusyBox jailbreak attack and obtain root privileges by overwriting the /etc/shadow file.
https://github.com/kmkz/exploit/blob/master/CVE-2017-5671-Credits.pdf
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-14748
https://akerva.com/blog/intermec-industrial-printers-local-root-with-busybox-jailbreak/
http://apps.intermec.com/downloads/eps_download/Firmware%20Release%20Notes%20x10_11_013310.pdf