medium4.2
CVE-2021-33881
On NXP MIFARE Ultralight and NTAG cards, an attacker can interrupt a write operation (aka conduct a "tear off" attack) over RFID to bypass a Monotonic Counter …
Impact
On NXP MIFARE Ultralight and NTAG cards, an attacker can interrupt a write operation (aka conduct a "tear off" attack) over RFID to bypass a Monotonic Counter protection mechanism. The impact depends on how the anti tear-off feature is used in specific applications such as public transportation, physical access control, etc.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nxp | Mifare Ultralight Ev1 Firmware | All versions |
| Nxp | Mifare Ultralight C Firmware | All versions |
| Nxp | Mifare Ultralight Nano Firmware | All versions |
| Nxp | Ntag 210 Firmware | All versions |
| Nxp | Ntag 212 Firmware | All versions |
| Nxp | Ntag 213 Firmware | All versions |
| Nxp | Ntag 215 Firmware | All versions |
| Nxp | Ntag 216 Firmware | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html
- https://www.nxp.com/docs/en/application-note/AN11340.pdf
- https://www.nxp.com/docs/en/application-note/AN13089.pdf
- https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/
- https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html
- https://www.nxp.com/docs/en/application-note/AN11340.pdf
- https://www.nxp.com/docs/en/application-note/AN13089.pdf
- https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/