CVE-2019-18817

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*", "matchCriteriaId": "4B79C534-0657-49B8-B28B-BE327D866E84", "versionEndExcluding": "1.3.5", "versionStartIncluding": "1.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Istio 1.3.x before 1.3.5 allows Denial of Service because continue_on_listener_filters_timeout is set to True, a related issue to CVE-2019-18836."}, {"lang": "es", "value": "Istio versiones 1.3.x anteriores a 1.3.5, permite una Denegaci\u00f3n de Servicio porque continue_on_listener_filters_timeout est\u00e1 establecido en True, un problema relacionado con CVE-2019-18836."}], "id": "CVE-2019-18817", "lastModified": "2026-06-17T02:25:23.763", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "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": "2019-11-12T14:15:11.407", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/istio/istio/issues/18229"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://istio.io/news/2019/announcing-1.3.5/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/istio/istio/issues/18229"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://istio.io/news/2019/announcing-1.3.5/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "istio/envoy: infinite loop in Envoy, and subsequently Istio leads to a DoS", "id": "1770956", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1770956"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["Istio 1.3.x before 1.3.5 allows Denial of Service because continue_on_listener_filters_timeout is set to True, a related issue to CVE-2019-18836.", "A flaw was found in envoy. When the option `continue_on_listener_filters_timeout` is set to True, an infinite loop can be triggered that could effectively exhaust Envoy's CPU resources causing a denial of service. The highest threat from this vulnerability is to system availability."], "name": "CVE-2019-18817", "package_state": [{"cpe": "cpe:/a:redhat:service_mesh:1", "fix_state": "Not affected", "package_name": "envoy", "product_name": "OpenShift Service Mesh 1"}], "public_date": "2019-11-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-18817\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-18817\nhttps://istio.io/news/2019/istio-security-2019-006/"], "threat_severity": "Important"}

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