2 lines
3.3 KiB
JSON
2 lines
3.3 KiB
JSON
{"affected":[{"affectedData":[{"product":"zeromq","vendor":"n/a","versions":[{"status":"affected","version":"zeromq 4.3.3"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*","matchCriteriaId":"C1384189-AC6C-4847-A3BF-FB7A3A826F75","versionEndExcluding":"4.3.3","versionStartIncluding":"4.2.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"An uncontrolled resource consumption (memory leak) flaw was found in ZeroMQ's src/xpub.cpp in versions before 4.3.3. This flaw allows a remote unauthenticated attacker to send crafted PUB messages that consume excessive memory if the CURVE/ZAP authentication is disabled on the server, causing a denial of service. The highest threat from this vulnerability is to system availability."},{"lang":"es","value":"Se encontró un fallo de consumo de recursos incontrolado (filtrado de memoria) en el archivo src/xpub.cpp de ZeroMQ en versiones anteriores a 4.3.3. Este fallo permite a un atacante remoto no autenticado enviar mensajes PUB diseñados que consumen memoria excesiva si la autenticación CURVE/ZAP está deshabilitada en el servidor, causando una denegación de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}],"id":"CVE-2021-20237","lastModified":"2026-06-17T03:33:31.573","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":4.3,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:P","version":"2.0"},"exploitabilityScore":8.6,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-05-28T11:15:07.970","references":[{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1921989"},{"source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1921989"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-401"}],"source":"nvd@nist.gov","type":"Primary"}]}
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