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CVE-2023-6477

Estado: ModificadaMedia (6.7)—

An issue has been discovered in GitLab EE affecting all versions starting from 16.5 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. When a user is assigned a custom role with admin_group_member permission, they may be able to make a group, other members or themselves Owners of that group, which may lead to privilege escalation.

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-2023-6477",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-6477",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-02-22T16:24:56.873302Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@gitlab.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
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      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
          ],
          "repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
          "vendor": "GitLab",
          "product": "GitLab",
          "versions": [
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              "status": "affected",
              "version": "16.5",
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              "status": "affected",
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              "versionType": "semver"
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  ],
  "published": "2024-02-22T00:15:51.533",
  "references": [
    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/433463",
      "tags": [
        "Permissions Required"
      ],
      "source": "cve@gitlab.com"
    },
    {
      "url": "https://hackerone.com/reports/2270898",
      "tags": [
        "Permissions Required"
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    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/433463",
      "tags": [
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      "url": "https://hackerone.com/reports/2270898",
      "tags": [
        "Permissions Required"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@gitlab.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue has been discovered in GitLab EE affecting all versions starting from 16.5 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. When a user is assigned a custom role with admin_group_member permission, they may be able to make a group, other members or themselves Owners of that group, which may lead to privilege escalation."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en GitLab EE que afecta a todas las versiones desde 16.5 anteriores a 16.7.6, todas las versiones desde 16.8 anteriores a 16.8.3, todas las versiones desde 16.9 anteriores a 16.9.1. Cuando a un usuario se le asigna una función personalizada con permiso admin_group_member, es posible que pueda convertir un grupo, otros miembros o ellos mismos en propietarios de ese grupo, lo que puede llevar a una escalada de privilegios."
    }
  ],
  "lastModified": "2026-06-17T06:50:49.323",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B2558C81-DADC-475C-A06B-DB9048CE85FC",
              "versionEndExcluding": "16.7.6",
              "versionStartIncluding": "16.5.0"
            },
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              "vulnerable": true,
              "matchCriteriaId": "BF18D8E8-7406-46F4-BDDD-CC743A5C4D80",
              "versionEndIncluding": "16.8.3",
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            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:16.9.0:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1E374890-90FC-4DC5-8C0B-87CC99B4A4D7"
            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "cve@gitlab.com"
}