nvd-json-data-feeds/CVE-2020/CVE-2020-158xx/CVE-2020-15813.json

{
  "id": "CVE-2020-15813",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-07-17T19:15:12.547",
  "lastModified": "2024-11-21T05:06:13.953",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Graylog before 3.3.3 lacks SSL Certificate Validation for LDAP servers. It allows use of an external user/group database stored in LDAP. The connection configuration allows the usage of unencrypted, SSL- or TLS-secured connections. Unfortunately, the Graylog client code (in all versions that support LDAP) does not implement proper certificate validation (regardless of whether the \"Allow self-signed certificates\" option is used). Therefore, any attacker with the ability to intercept network traffic between a Graylog server and an LDAP server is able to redirect traffic to a different LDAP server (unnoticed by the Graylog server due to the lack of certificate validation), effectively bypassing Graylog's authentication mechanism."
    },
    {
      "lang": "es",
      "value": "Graylog versiones anteriores a 3.3.3, carece de una comprobaci\u00f3n de certificado SSL para servidores LDAP. Permite el uso de una base de datos de usuarios y grupos externos almacenados en LDAP. La configuraci\u00f3n de la conexi\u00f3n permite el uso de conexiones sin cifrar, con seguridad SSL o TLS. Desafortunadamente, el c\u00f3digo del cliente Graylog (en todas las versiones que admiten LDAP) no implementa una comprobaci\u00f3n de certificado adecuada (independientemente de si se usa la opci\u00f3n \"Allow self-signed certificates\"). Por lo tanto, cualquier atacante con la capacidad de interceptar el tr\u00e1fico de red entre un servidor Graylog y un servidor LDAP puede redireccionar el tr\u00e1fico hacia un servidor LDAP diferente (desapercibido por el servidor Graylog debido a la falta de comprobaci\u00f3n del certificado), omitiendo efectivamente el mecanismo de autenticaci\u00f3n de Graylog"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:graylog:graylog:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "3.3.3",
              "matchCriteriaId": "F9A21A46-6422-4E60-ADAA-9605AB691F95"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/Graylog2/graylog2-server/issues/5906",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/Graylog2/graylog2-server/issues/5906",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}