FKIE_CVE-2020-8290

Vulnerability from fkie_nvd - Published: 2020-12-27 02:15 - Updated: 2024-11-21 05:38
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.
References
support@hackerone.comhttps://github.com/geffner/CVE-2020-8290/blob/master/README.mdExploit, Third Party Advisory
support@hackerone.comhttps://hackerone.com/reports/818857Permissions Required
support@hackerone.comhttps://youtu.be/OpC6neWd2aMExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/geffner/CVE-2020-8290/blob/master/README.mdExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/818857Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://youtu.be/OpC6neWd2aMExploit, Third Party Advisory
Impacted products
Vendor Product Version
backblaze backblaze *
backblaze backblaze *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:macos:*:*",
              "matchCriteriaId": "BA80ABAD-2620-4350-B506-ACCF9B4A18E3",
              "versionEndExcluding": "7.0.0.439",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "F7051153-3CAD-442F-BD4B-8C780431FBD4",
              "versionEndExcluding": "7.0.0.439",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary."
    },
    {
      "lang": "es",
      "value": "Backblaze para Windows y Backblaze para macOS versiones anteriores a 7.0.0.439, sufren de una administraci\u00f3n de privilegios inadecuada en el asistente \"bztransmit\" debido a la falta de manejo y comprobaci\u00f3n de permisos antes de la creaci\u00f3n de directorios de actualizaci\u00f3n de clientes que permiten la escalada local de privilegios por medio del binario de actualizaci\u00f3n de cliente no autorizado"
    }
  ],
  "id": "CVE-2020-8290",
  "lastModified": "2024-11-21T05:38:40.217",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-12-27T02:15:14.573",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/geffner/CVE-2020-8290/blob/master/README.md"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://hackerone.com/reports/818857"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://youtu.be/OpC6neWd2aM"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/geffner/CVE-2020-8290/blob/master/README.md"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://hackerone.com/reports/818857"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://youtu.be/OpC6neWd2aM"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "support@hackerone.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.