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CVE-2020-5777

Estado: ModificadaCrítica (9.8)—

MAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or another web server) setting MaxRequestWorkers (formerly MaxClients) (default 256). This can be done by sending at least 151 simultaneous requests to the Magento website to trigger a "Too many connections" error, then use default magmi:magmi basic authentication to remotely bypass authentication.

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)

Magmi Project — Magmi

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-5777",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "vulnreport@tenable.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "MAGMI",
          "versions": [
            {
              "status": "affected",
              "version": "All versions prior to version 0.7.24"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-09-01T21:15:12.660",
  "references": [
    {
      "url": "https://www.tenable.com/security/research/tra-2020-51",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vulnreport@tenable.com"
    },
    {
      "url": "https://www.tenable.com/security/research/tra-2020-51",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or another web server) setting MaxRequestWorkers (formerly MaxClients) (default 256). This can be done by sending at least 151 simultaneous requests to the Magento website to trigger a \"Too many connections\" error, then use default magmi:magmi basic authentication to remotely bypass authentication."
    },
    {
      "lang": "es",
      "value": "Las versiones de MAGMI anteriores a 0.7.24 son vulnerables a una omisión de autenticación remota debido a que permiten credenciales predeterminadas en caso de que haya un fallo en la conexión de la base de datos. Un atacante remoto puede desencadenar este error de conexión si la configuración de Mysql max_connections (predeterminado 151) es menor que la configuración de Apache (u otro servidor web) MaxRequestWorkers (anteriormente MaxClients) (predeterminado 256). Esto se puede hacer mediante el envío de al menos 151 peticiones simultáneas al sitio web de Magento para desencadenar un error de \"Too many connections\", luego use la autenticación básica magmi:magmi predeterminada para omitir la autenticación remotamente"
    }
  ],
  "lastModified": "2026-06-17T03:22:12.803",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:magmi_project:magmi:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "322E507B-DD40-4CA4-B181-74DA8CB8F604",
              "versionEndExcluding": "0.7.24"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vulnreport@tenable.com"
}