CVE-2022-25304

{"containers": {"cna": {"affected": [{"product": "opcua", "vendor": "n/a", "versions": [{"lessThan": "unspecified", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "asyncua", "vendor": "n/a", "versions": [{"lessThan": "unspecified", "status": "affected", "version": "0", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Vera Mens"}, {"lang": "en", "value": "Uri Katz"}, {"lang": "en", "value": "Sharon Brizinov of Team82 (Claroty Research)"}], "datePublic": "2022-08-23T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "All versions of package opcua; all versions of package asyncua are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. 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{"affected": [{"affectedData": [{"product": "opcua", "vendor": "n/a", "versions": [{"lessThan": "unspecified", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "asyncua", "vendor": "n/a", "versions": [{"lessThan": "unspecified", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "report@snyk.io"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:asyncua_project:asyncua:*:*:*:*:*:python:*:*", "matchCriteriaId": "515536F5-025D-4947-A517-339AE3019B7C", "vulnerable": true}, {"criteria": "cpe:2.3:a:opcua_project:opcua:*:*:*:*:*:python:*:*", "matchCriteriaId": "4E3BB145-6414-49F0-9D4C-30ABBF0CB7D0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "All versions of package opcua; all versions of package asyncua are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk."}, {"lang": "es", "value": "Todas las versiones del paquete opcua; todas las versiones del paquete asyncua son vulnerables a una Denegaci\u00f3n de Servicio (DoS) debido a una falta de limitaci\u00f3n en el n\u00famero de chunks recibidos - por sesi\u00f3n \u00fanica o en total para todas las sesiones concurrentes. Un atacante puede explotar esta vulnerabilidad mediante el env\u00edo de un n\u00famero ilimitado de chunks enormes (por ejemplo, 2GB cada uno) sin enviar el chunk de cierre Final."}], "id": "CVE-2022-25304", "lastModified": "2026-06-17T04:33:21.410", "metrics": {"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": "report@snyk.io", "type": "Secondary"}, {"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": "2022-08-23T05:15:07.987", "references": [{"source": "report@snyk.io", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/FreeOpcUa/python-opcua/issues/1466"}, {"source": "report@snyk.io", "tags": ["Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731"}, {"source": "report@snyk.io", "tags": ["Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/FreeOpcUa/python-opcua/issues/1466"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730"}], "sourceIdentifier": "report@snyk.io", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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