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CVE-2021-32033

Estado: ModificadaMedia (4.6)—

Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwords in certain situations. The time value used by the device can be set independently from the used seed value for generating time-based one-time passwords, without authentication. Thus, an attacker with short-time physical access to a device can set the internal real-time clock (RTC) to the future, generate one-time passwords, and reset the clock to the current time. This allows the generation of valid future time-based one-time passwords without having further access to the hardware token.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Protectimus — Slim NFC 70 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-32033",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "baseScore": 1.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
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          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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  "affected": [
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  "published": "2021-06-16T12:15:12.693",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-335"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Protectimus SLIM NFC 70 10.01 devices allow a Time Traveler attack in which attackers can predict TOTP passwords in certain situations. The time value used by the device can be set independently from the used seed value for generating time-based one-time passwords, without authentication. Thus, an attacker with short-time physical access to a device can set the internal real-time clock (RTC) to the future, generate one-time passwords, and reset the clock to the current time. This allows the generation of valid future time-based one-time passwords without having further access to the hardware token."
    },
    {
      "lang": "es",
      "value": "Los dispositivos Protectimus SLIM NFC 70 versiones 10.01, permiten un ataque Time Traveler en el que atacantes pueden predecir las contraseñas TOTP en determinadas situaciones. El valor del tiempo usado por el dispositivo se puede establecer independientemente del valor de la semilla usada para generar contraseñas de un solo uso basadas en el tiempo, sin autenticación. Así, un atacante con acceso físico de corta duración a un dispositivo puede ajustar el reloj interno de tiempo real (RTC) al futuro, generar contraseñas de un solo uso y restablecer el reloj a la hora actual. Esto permite la generación de contraseñas de un solo uso válidas en el futuro sin tener más acceso al token de hardware"
    }
  ],
  "lastModified": "2026-06-17T03:52:42.610",
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