{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-02T21:52:03.959","vulnerabilities":[{"cve":{"id":"CVE-2017-5637","sourceIdentifier":"security@apache.org","published":"2017-10-10T01:30:22.360","lastModified":"2026-05-13T00:24:29.033","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Two four letter word commands \"wchp/wchc\" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10, 3.5.3, and later."},{"lang":"es","value":"Dos comandos con palabras de cuatro letras \"wchp/wchc\" provocan un gran consumo de CPU y podrían dar lugar a que se alcance el máximo uso de CPU en el servidor Apache ZooKeeper si se abusa de ellos, lo que da lugar a que el servidor quede deshabilitado para servir a peticiones de clientes legítimos. Las versiones de la 3.4.9 a la 3.5.2 de Apache ZooKeeper tienen este problema, que fue solucionado en las versiones 3.4.10, 3.5.3 y posteriores."}],"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:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-306"},{"lang":"en","value":"CWE-400"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.0:*:*:*:*:*:*:*","matchCriteriaId":"F0E65AF7-9D19-4B31-9BE0-4EB07B2853F9"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.1:*:*:*:*:*:*:*","matchCriteriaId":"98FFE2B9-6744-4198-946E-89D78EC5E72C"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.2:*:*:*:*:*:*:*","matchCriteriaId":"075AF151-A8A1-48BC-BD8B-E123ACAD5A02"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.3:*:*:*:*:*:*:*","matchCriteriaId":"AF7A6DB3-2F19-4155-B019-2325A3D1186F"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.4:*:*:*:*:*:*:*","matchCriteriaId":"7346C4C9-7788-4686-A9D3-0225CA1A5B39"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.5:*:*:*:*:*:*:*","matchCriteriaId":"2BA6B730-25E1-489D-BBB7-18F9251EF20D"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.6:*:*:*:*:*:*:*","matchCriteriaId":"7DCF90EA-9BD7-42FE-A1C2-0C04D53543DC"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.7:*:*:*:*:*:*:*","matchCriteriaId":"6E981E8B-0BEF-4644-919F-0BF7549D70E8"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.8:*:*:*:*:*:*:*","matchCriteriaId":"10957A4F-4A07-4777-A92B-525C0AF9D99C"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.4.9:*:*:*:*:*:*:*","matchCriteriaId":"2732FE0E-9F19-46BE-BE05-3DF6ED7AC222"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.5.0:*:*:*:*:*:*:*","matchCriteriaId":"C6BC9FC3-2BFE-40D1-A647-801AC49CA0E0"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.5.1:*:*:*:*:*:*:*","matchCriteriaId":"31DA0549-5FD8-427E-995F-49B26854CB47"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:zookeeper:3.5.2:*:*:*:*:*:*:*","matchCriteriaId":"A7974A08-51CA-4E28-A914-F2C5173E0C76"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}]}]}],"references":[{"url":"http://www.debian.org/security/2017/dsa-3871","source":"security@apache.org","tags":["Third 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