Hardware Backdoor Discovered in RFID Cards Used in Hotels and Offices Worldwide
Aug 22, 2024
Hardware Security / Supply Chain Attack
Cybersecurity researchers have uncovered a hardware backdoor within a particular model of MIFARE Classic contactless cards that could allow authentication with an unknown key and open hotel rooms and office doors. The attacks have been demonstrated against FM11RF08S, a new variant of MIFARE Classic that was released by Shanghai Fudan Microelectronics in 2020. "The FM11RF08S backdoor enables any entity with knowledge of it to compromise all user-defined keys on these cards, even when fully diversified, simply by accessing the card for a few minutes," Quarkslab researcher Philippe Teuwen said . The secret key is not only common to existing FM11RF08S cards, the investigation found that "the attacks could be executed instantaneously by an entity in a position to carry out a supply chain attack." Compounding matters further, a similar backdoor has been identified in the previous generation, FM11RF08, that's protected with another key. The backdoor has been obse
