Description
The ESL (Electronic Shelf Label) protocol, as implemented by (for example) the OV80e934802 RF transceiver on the ETAG-2130-V4.3 20190629 board, does not use authentication, which allows attackers to change label values via 433 MHz RF signals, as demonstrated by disrupting the organization of a hospital storage unit, or changing retail pricing.
References
- https://www.youtube.com/watch?v=FQRMNjZVlHg
- 20221208 SEC Consult SA-20221201-0 :: Replay attacks & Displaying arbitrary contents in Zhuhai Suny Technology ESL Tag / ETAG-TECH protocol (electronic shelf labels) mailing-list
- http://packetstormsecurity.com/files/170177/Zhuhai-Suny-Technology-ESL-Tag-Forgery-Replay-Attacks.html