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{"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"}]}], "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 encontr\u00f3 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 dise\u00f1ados que consumen memoria excesiva si la autenticaci\u00f3n CURVE/ZAP est\u00e1 deshabilitada en el servidor, causando una denegaci\u00f3n de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}], "id": "CVE-2021-20237", "lastModified": "2024-11-21T05:46:11.477", "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"}]}

{"bugzilla": {"description": "zeromq: Memory leaks via metadata messages processed by PUB sockets", "id": "1921989", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921989"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-400", "details": ["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.", "An uncontrolled resource consumption (memory leak) flaw was found in ZeroMQ's src/xpub.cpp. 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."], "name": "CVE-2021-20237", "package_state": [{"cpe": "cpe:/a:redhat:ceph_storage:2", "fix_state": "Out of support scope", "package_name": "zeromq3", "product_name": "Red Hat Ceph Storage 2"}], "public_date": "2020-09-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-20237\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20237\nhttps://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw"], "threat_severity": "Low"}