CVE-2021-33881

Published: Jun 6, 2021Modified: Nov 21, 2024

4.2

Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 0.5 / Impact: 3.6

Source: NVD

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.

Affected (8)

Products: Nxp: Mifare Ultralight Ev1 Firmware, Mifare Ultralight C Firmware, Mifare Ultralight Nano Firmware, Ntag 210 Firmware, Ntag 212 Firmware, Ntag 213 Firmware, Ntag 215 Firmware, Ntag 216 Firmware

Nxp

8 products

Mifare Ultralight Ev1 Firmware

Mifare Ultralight C Firmware

Mifare Ultralight Nano Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Mifare Ultralight Ev1 Firmware	All versions

Running on/with	Platform Versions
Nxp Mifare Ultralight Ev1	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Mifare Ultralight C Firmware	All versions

Running on/with	Platform Versions
Nxp Mifare Ultralight C	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Mifare Ultralight Nano Firmware	All versions

Running on/with	Platform Versions
Nxp Mifare Ultralight Nano	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Ntag 210 Firmware	All versions

Running on/with	Platform Versions
Nxp Ntag 210	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Ntag 212 Firmware	All versions

Running on/with	Platform Versions
Nxp Ntag 212	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Ntag 213 Firmware	All versions

Running on/with	Platform Versions
Nxp Ntag 213	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Ntag 215 Firmware	All versions

Running on/with	Platform Versions
Nxp Ntag 215	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Nxp Ntag 216 Firmware	All versions

Running on/with	Platform Versions
Nxp Ntag 216	All versions

Related CWEs

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (8)

https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html

Source: cve@mitre.org

MitigationThird Party Advisory

https://www.nxp.com/docs/en/application-note/AN11340.pdf

Source: cve@mitre.org

Vendor Advisory

https://www.nxp.com/docs/en/application-note/AN13089.pdf

Source: cve@mitre.org

Vendor Advisory

https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/

Source: cve@mitre.org

ExploitThird Party Advisory

https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html

Source: af854a3a-2127-422b-91ae-364da2661108

MitigationThird Party Advisory

https://www.nxp.com/docs/en/application-note/AN11340.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.nxp.com/docs/en/application-note/AN13089.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.