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CVE-2015-8009

Status: ModifiedCritical (9.8)—

The MWOAuthDataStore::lookup_token function in Extension:OAuth for MediaWiki 1.25.x before 1.25.3, 1.24.x before 1.24.4, and before 1.23.11 does not properly validate the signature when checking the authorization signature, which allows remote registered Consumers to use another Consumer's credentials by leveraging knowledge of the credentials.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Mediawiki — Mediawiki

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2015-8009",
  "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": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/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": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-07-25T14:29:00.223",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2015/10/29/14",
      "tags": [
        "Mailing List",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1034028",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://phabricator.wikimedia.org/T103023",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2015/10/29/14",
      "tags": [
        "Mailing List",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1034028",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://phabricator.wikimedia.org/T103023",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-255"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The MWOAuthDataStore::lookup_token function in Extension:OAuth for MediaWiki 1.25.x before 1.25.3, 1.24.x before 1.24.4, and before 1.23.11 does not properly validate the signature when checking the authorization signature, which allows remote registered Consumers to use another Consumer's credentials by leveraging knowledge of the credentials."
    },
    {
      "lang": "es",
      "value": "La función MWOAuthDataStore::lookup_token Extension:OAuth para MediaWiki versión 1.25.x anterior a 1.25.3, versión 1.24.x anterior a 1.24.4 y anterior a versión 1.23.11, no comprueba apropiadamente la firma cuando verifica la firma de autorización, lo que permite a los consumidores registrados remotos utilizar las credenciales de otro consumidor mediante el aprovechamiento el conocimiento de las credenciales."
    }
  ],
  "lastModified": "2026-06-17T00:33:51.933",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FE35D692-87E9-4982-AA23-27EBD5E5EEE1",
              "versionEndIncluding": "1.23.10"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.24.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0B21EB21-AE87-48BF-B4A1-5E63A2E116B4"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.24.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A6C00423-B3FE-485A-9014-22F409DBD377"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.24.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E90C95FB-71CA-4CA1-935D-58A08244A81F"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.24.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5DDBD41F-C2D5-4D7C-B069-FBC2C8EBB81C"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.25.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9129F374-93CB-43CE-A3B2-DB6483514F32"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.25.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE125142-10A2-4ACF-9BA4-44E63C1E5DB6"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.25.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DF21D6EE-CEAC-42A7-99B6-D9D033E1FEC6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}