{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-09T11:35:05.849","vulnerabilities":[{"cve":{"id":"CVE-2017-12635","sourceIdentifier":"security@apache.org","published":"2017-11-14T20:29:00.200","lastModified":"2026-05-13T00:24:29.033","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Due to differences in the Erlang-based JSON parser and JavaScript-based JSON parser, it is possible in Apache CouchDB before 1.7.0 and 2.x before 2.1.1 to submit _users documents with duplicate keys for 'roles' used for access control within the database, including the special case '_admin' role, that denotes administrative users. In combination with CVE-2017-12636 (Remote Code Execution), this can be used to give non-admin users access to arbitrary shell commands on the server as the database system user. The JSON parser differences result in behaviour that if two 'roles' keys are available in the JSON, the second one will be used for authorising the document write, but the first 'roles' key is used for subsequent authorization for the newly created user. By design, users can not assign themselves roles. The vulnerability allows non-admin users to give themselves admin privileges."},{"lang":"es","value":"Debido a las diferencias en el analizador sintáctico de JSON basado en Erlang y el el analizador sintáctico de JSON basado en JavaScript, es posible que, en versiones anteriores a la 1.7.0 y en las versiones 2.x anteriores a la 2.1.1 de Apache CouchDB, se puedan enviar documentos _users con claves duplicadas para \"roles\" empleados para el control de acceso en la base de datos, incluyendo el caso especial del rol \"_admin\", que denota a los usuarios administrativos. Esto puede utilizarse conjuntamente con CVE-2017-12636 (ejecución remota de código) para dar acceso a usuarios no administradores a comandos shell arbitrarios en el servidor como el usuario del sistema de la base de datos. Las diferencias entre analizadores sintácticos de JSON resultan en un comportamiento por el cual, si dos claves \"roles\" están disponibles en el JSON, la segunda se empleará para autorizar la escritura del documento, pero la primera clave \"roles\" se emplea para la subsecuente autorización para el usuario recientemente creado. Por diseño, los usuarios no pueden asignase roles a sí mismos. La vulnerabilidad permite que usuarios no administradores se autoasignen privilegios de administrador."}],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:C/I:C/A:C","baseScore":10.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-269"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:*","versionEndExcluding":"1.7.0","matchCriteriaId":"DCEE0A7F-2D9E-4B71-AB1D-F7E51FAF8839"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:2.0.0:*:*:*:*:*:*:*","matchCriteriaId":"7C28D397-7FB6-472F-A602-C2E7E4CCC7D9"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:2.0.0:rc1:*:*:*:*:*:*","matchCriteriaId":"20694545-A117-4327-9704-E4E9C26C0A10"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:2.0.0:rc2:*:*:*:*:*:*","matchCriteriaId":"53337458-D551-42E3-825D-1E94AB8409D3"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:2.0.0:rc3:*:*:*:*:*:*","matchCriteriaId":"C6848350-0CDC-4CB1-B6DB-1A47227F10AF"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:couchdb:2.0.0:rc4:*:*:*:*:*:*","matchCriteriaId":"2A820A52-9170-4E32-B224-1C9E7F48A6D2"}]}]}],"references":[{"url":"http://www.securityfocus.com/bid/101868","source":"security@apache.org","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67%40%3Cdev.couchdb.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00026.html","source":"security@apache.org"},{"url":"https://security.gentoo.org/glsa/201711-16","source":"security@apache.org","tags":["Third Party Advisory"]},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03935en_us","source":"security@apache.org"},{"url":"https://www.exploit-db.com/exploits/44498/","source":"security@apache.org"},{"url":"https://www.exploit-db.com/exploits/45019/","source":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/101868","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67%40%3Cdev.couchdb.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00026.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201711-16","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03935en_us","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/44498/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45019/","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}