CVE-2021-33881
NXP MIFARE Ultralight and NTAG RFID "Tear Off" Counter Bypass
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.
INFO
Published Date :
June 6, 2021, 4:15 p.m.
Last Modified :
June 17, 2021, 4:39 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.5
Public PoC/Exploit Available at Github
CVE-2021-33881 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-33881
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-33881.
| URL | Resource |
|---|---|
| https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html | Mitigation Third Party Advisory |
| https://www.nxp.com/docs/en/application-note/AN11340.pdf | Vendor Advisory |
| 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Mix of talks, blogposts and papers
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-33881 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-33881 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html No Types Assigned https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html Mitigation, Third Party Advisory Changed Reference Type https://www.nxp.com/docs/en/application-note/AN11340.pdf No Types Assigned https://www.nxp.com/docs/en/application-note/AN11340.pdf Vendor Advisory Changed Reference Type https://www.nxp.com/docs/en/application-note/AN13089.pdf No Types Assigned https://www.nxp.com/docs/en/application-note/AN13089.pdf Vendor Advisory Changed Reference Type https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/ No Types Assigned https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/ Exploit, Third Party Advisory Added CWE NIST CWE-863 Added CPE Configuration AND OR *cpe:2.3:o:nxp:mifare_ultralight_ev1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:mifare_ultralight_ev1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:mifare_ultralight_c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:mifare_ultralight_c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:mifare_ultralight_nano_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:mifare_ultralight_nano:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:ntag_210_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:ntag_210:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:ntag_212_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:ntag_212:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:ntag_213_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:ntag_213:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:ntag_215_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:ntag_215:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:nxp:ntag_216_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:nxp:ntag_216:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-33881 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-33881
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.02%
score
0.45412
percentile