CVE-2020-15133

{"id": "CVE-2020-15133", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 2.2}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 1.6}]}, "published": "2020-07-31T18:15:14.473", "references": [{"url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-295"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "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"}], "lastModified": "2021-11-18T18:28:56.893", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:faye-websocket_project:faye-websocket:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A21B57E-CBCB-44A7-B047-AFD01BAD894F", "versionEndExcluding": "0.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}