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CVE-2021-43177

Estado: ModificadaMedia (5.3)—

As a result of an incomplete fix for CVE-2015-7225, in versions of devise-two-factor prior to 4.0.2 it is possible to reuse a One-Time-Password (OTP) for one (and only one) immediately trailing interval. CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)

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)

Tinfoilsecurity — Devise-two-factor

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-43177",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@synopsys.com",
      "affectedData": [
        {
          "vendor": "Tinfoil",
          "product": "devise-two-factor",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.0.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-04-11T20:15:16.037",
  "references": [
    {
      "url": "https://github.com/tinfoil/devise-two-factor/security/advisories/GHSA-jm35-h8q2-73mp",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@synopsys.com"
    },
    {
      "url": "https://github.com/tinfoil/devise-two-factor/security/advisories/GHSA-jm35-h8q2-73mp",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@synopsys.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-254"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "As a result of an incomplete fix for CVE-2015-7225, in versions of devise-two-factor prior to 4.0.2 it is possible to reuse a One-Time-Password (OTP) for one (and only one) immediately trailing interval. CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)"
    },
    {
      "lang": "es",
      "value": "Como resultado de una corrección incompleta de CVE-2015-7225, en las versiones de devise-two-factor anteriores a 4.0.2, es posible reusar una contraseña de un solo uso (OTP) durante un (y solo un) intervalo inmediatamente posterior. Vector CVSS: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)"
    }
  ],
  "lastModified": "2026-06-17T04:10:35.417",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tinfoilsecurity:devise-two-factor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "39DC82FD-70FB-41B8-873C-A618918032DE",
              "versionEndExcluding": "4.0.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@synopsys.com"
}