{
  "schema_version": "1.4.0",
  "id": "GHSA-ff8p-pfwc-wjf2",
  "modified": "2022-05-24T19:04:09Z",
  "published": "2022-05-24T19:04:09Z",
  "aliases": [
    "CVE-2021-33881"
  ],
  "details": "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.",
  "severity": [],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33881"
    },
    {
      "type": "WEB",
      "url": "https://blog.quarkslab.com/rfid-monotonic-counter-anti-tearing-defeated.html"
    },
    {
      "type": "WEB",
      "url": "https://www.nxp.com/docs/en/application-note/AN11340.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.nxp.com/docs/en/application-note/AN13089.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.sstic.org/2021/presentation/eeprom_it_will_all_end_in_tears"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "severity": "MODERATE",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-06T16:15:00Z"
  }
}