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CVE-2018-20500

Estado: ModificadaAlta (7.5)—

Fue descubierto un problema con los permisos inseguros en GitLab Community and Enterprise Edition 9.4 y versiones superiores, anteriores a 11.4.13, 11.5.x anteriores a 11.5.6 y 11.6.x anteriores a 11.6.1. El Runner Registration Token en la configuración de CI/CD no se pudo restablecer. Esto fue un riesgo de seguridad si uno de los mantenedores deja el grupo y ellos conocen el token.

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)

Gitlab — Gitlab

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-20500",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-17T16:29:00.640",
  "references": [
    {
      "url": "https://about.gitlab.com/2018/12/31/security-release-gitlab-11-dot-6-dot-1-released/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://about.gitlab.com/blog/categories/releases/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://about.gitlab.com/2018/12/31/security-release-gitlab-11-dot-6-dot-1-released/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://about.gitlab.com/blog/categories/releases/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An insecure permissions issue was discovered in GitLab Community and Enterprise Edition 9.4 and later but before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. The runner registration token in the CI/CD settings could not be reset. This was a security risk if one of the maintainers leaves the group and they know the token."
    },
    {
      "lang": "es",
      "value": "Fue descubierto un problema con los permisos inseguros en GitLab Community and Enterprise Edition 9.4 y versiones superiores, anteriores a 11.4.13, 11.5.x anteriores a 11.5.6 y 11.6.x anteriores a 11.6.1. El Runner Registration Token en la configuración de CI/CD no se pudo restablecer. Esto fue un riesgo de seguridad si uno de los mantenedores deja el grupo y ellos conocen el token."
    }
  ],
  "lastModified": "2026-06-17T01:52:58.853",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2D22FA16-5F1D-4FBA-8DB3-E2AE4476DDFA",
              "versionEndExcluding": "11.4.13",
              "versionStartIncluding": "9.4.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
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              "matchCriteriaId": "54B3C2DA-1CEE-4DFD-B2AA-F98BE7D9447E",
              "versionEndExcluding": "11.4.13",
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            },
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              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
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              "matchCriteriaId": "555DAC6F-1C9E-4D4E-9100-35DDFD320F51",
              "versionEndExcluding": "11.5.6",
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            },
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              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
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            },
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            },
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}