CVE Vulnerability

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 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.

1.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

4.2 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.5 / Impact : 3.6

Attack Vector PHYSICAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.nxp.com/docs/en/application-note/AN13089.pdf Vendor Advisory
https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/ Exploit Third Party Advisory
https://www.nxp.com/docs/en/application-note/AN11340.pdf Vendor Advisory
https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html Mitigation Third Party Advisory
Configurations

Configuration 1
Information

Published : 2021-06-06 04:15

Updated : 2021-06-17 04:39

NVD link : CVE-2021-33881

Mitre link : CVE-2021-33881

Products Affected
No products.
CWE
CWE-863