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CVE-2020-25860

Estado: ModificadaMedia (6.6)—

The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device.

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)

Pengutronix — Rauc

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-25860",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.6,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.7
      }
    ]
  },
  "affected": [
    {
      "source": "vuln@vdoo.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Pengutronix RAUC",
          "versions": [
            {
              "status": "affected",
              "version": "All versions before 1.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-12-21T18:15:15.227",
  "references": [
    {
      "url": "https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "vuln@vdoo.com"
    },
    {
      "url": "https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-framework",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "vuln@vdoo.com"
    },
    {
      "url": "https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-framework",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vuln@vdoo.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device."
    },
    {
      "lang": "es",
      "value": "El módulo install.c en el cliente de actualización de Pengutronix RAUC versiones anteriores a 1.5, presenta una vulnerabilidad Time-of-Check Time-of-Use, donde la verificación de la firma en un archivo de actualización toma lugar antes de que el archivo reabierto para la instalación. Un atacante que pueda modificar el archivo de actualización justo antes de que se vuelva a abrir puede instalar código arbitrario en el dispositivo"
    }
  ],
  "lastModified": "2026-06-17T03:07:24.317",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:pengutronix:rauc:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "43D4968A-EE56-46FC-8E96-497D5B385F1F",
              "versionEndExcluding": "1.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vuln@vdoo.com"
}