CVE-2021-23018

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{"affected": [{"affectedData": [{"product": "Nginx Controller", "vendor": "n/a", "versions": [{"status": "affected", "version": "\"3.x before 3.4.0\""}]}], "source": "f5sirt@f5.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:f5:nginx_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "064A19E8-57A9-4C34-B84C-54F3F0A9DA40", "versionEndIncluding": "3.4.0", "versionStartIncluding": "3.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Intra-cluster communication does not use TLS. The services within the NGINX Controller 3.x before 3.4.0 namespace are using cleartext protocols inside the cluster."}, {"lang": "es", "value": "Una comunicaci\u00f3n dentro del cl\u00faster no usa TLS. Los servicios dentro del espacio de nombres de NGINX Controller 3.x versiones anteriores a 3.4.0 estan usando protocolos de texto sin cifrar dentro del cl\u00faster"}], "id": "CVE-2021-23018", "lastModified": "2026-06-17T03:38:13.323", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-01T12:15:07.720", "references": [{"source": "f5sirt@f5.com", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K97002210"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K97002210"}], "sourceIdentifier": "f5sirt@f5.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-319"}], "source": "f5sirt@f5.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-319"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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