CVE-2021-33881

State: Published
Severity: Not scored
Published: Jun 6, 2021
Updated: Aug 4, 2024
Reserved: Jun 6, 2021

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html
https://www.nxp.com/docs/en/application-note/AN13089.pdf
https://www.nxp.com/docs/en/application-note/AN11340.pdf
https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/

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