CVE-2021-33881

Katalog CVE

CVSS 4.2 · Medium EPSS 0,41%

Kerentanan Incorrect Authorization pada nxp mifare ultralight ev1 firmware, nxp mifare ultralight c firmware +6 lainnya. Skor CVSS 3.1 4.2 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

6 Juni 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.2 (Medium), sumber NVD
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.nxp.com/docs/en/application-note/AN11340.pdf advisory vendor
• https://www.nxp.com/docs/en/application-note/AN13089.pdf advisory vendor
• https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html mitigasi · advisory pihak ketiga
• https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears/ exploit · advisory pihak ketiga