CVE-2020-15133

{"containers": {"cna": {"affected": [{"product": "faye-websocket", "vendor": "faye", "versions": [{"status": "affected", "version": "< 0.11.0"}]}], "descriptions": [{"lang": "en", "value": "In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to implement the TLS handshake whenever a `wss:` URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any `wss:` connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading `faye-websocket` to v0.11.0 is recommended."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "CWE-295: Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-07-31T17:40:21.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"}], "source": {"advisory": "GHSA-2v5c-755p-p4gv", "discovery": "UNKNOWN"}, "title": "Missing TLS certificate verification in Faye Websocket", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-15133", "STATE": "PUBLIC", "TITLE": "Missing TLS certificate verification in Faye Websocket"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "faye-websocket", "version": {"version_data": [{"version_value": "< 0.11.0"}]}}]}, "vendor_name": "faye"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to implement the TLS handshake whenever a `wss:` URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any `wss:` connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading `faye-websocket` to v0.11.0 is recommended."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-295: Improper Certificate Validation"}]}]}, "references": {"reference_data": [{"name": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/", "refsource": "MISC", "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"}, {"name": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv", "refsource": "CONFIRM", "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"}]}, "source": {"advisory": "GHSA-2v5c-755p-p4gv", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:08:22.247Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-15133", "datePublished": "2020-07-31T17:40:21.000Z", "dateReserved": "2020-06-25T00:00:00.000Z", "dateUpdated": "2024-08-04T13:08:22.247Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "faye-websocket", "vendor": "faye", "versions": [{"status": "affected", "version": "< 0.11.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:faye-websocket_project:faye-websocket:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A21B57E-CBCB-44A7-B047-AFD01BAD894F", "versionEndExcluding": "0.11.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to implement the TLS handshake whenever a `wss:` URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any `wss:` connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading `faye-websocket` to v0.11.0 is recommended."}, {"lang": "es", "value": "En faye-websocket versiones anteriores a 0.11.0, se presenta una falta de comprobaci\u00f3n de certificaci\u00f3n en los protocolos de enlaces TLS. La clase \"Faye::WebSocket::Client\" usa el m\u00e9todo \"EM::Connection #start_tls\" en EventMachine para implementar el protocolo de enlace TLS cada vez que una URL \"wss:\" es usada para la conexi\u00f3n. Este m\u00e9todo no implementa la verificaci\u00f3n de certificados por defecto, lo que significa que no comprueba que el servidor presente un certificado TLS v\u00e1lido y confiable para el nombre de host esperado. Eso significa que cualquier conexi\u00f3n \"wss:\" realizada con esta biblioteca es vulnerable a un ataque de tipo man-in-the-middle, ya que no confirma la identidad del servidor al que est\u00e1 conectado. Para obtener m\u00e1s informaci\u00f3n de fondo sobre este tema, consulte el Aviso de GitHub referenciado. Es recomendado actualizar \"faye-websocket\" a la versi\u00f3n v0.11.0"}], "id": "CVE-2020-15133", "lastModified": "2026-06-17T02:56:06.977", "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": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.8, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-31T18:15:14.473", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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