{
  "id": "CVE-2020-8173",
  "sourceIdentifier": "support@hackerone.com",
  "published": "2020-11-02T21:15:34.710",
  "lastModified": "2024-11-21T05:38:26.190",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A too small set of random characters being used for encryption in Nextcloud Server 18.0.4 allowed decryption in shorter time than intended."
    },
    {
      "lang": "es",
      "value": "Un conjunto muy peque\u00f1o de caracteres aleatorios que est\u00e1n siendo utilizados para el cifrado en Nextcloud Server versi\u00f3n 18.0.4, permiti\u00f3 el descifrado en un tiempo m\u00e1s corto del previsto"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 2.2,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 1.4
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 6.8,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "support@hackerone.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ]
    },
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-311"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "17.0.7",
              "matchCriteriaId": "08EA63FB-C11B-4333-B006-74AE9EF83F61"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "18.0.0",
              "versionEndExcluding": "18.0.5",
              "matchCriteriaId": "98AEFCB4-A95C-4A28-A752-629BCE6DBAE5"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://hackerone.com/reports/852841",
      "source": "support@hackerone.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-023",
      "source": "support@hackerone.com",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://hackerone.com/reports/852841",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-023",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    }
  ]
}