CVE-2022-33684

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This vulnerability allows an attacker to perform a man in the middle attack and intercept and/or modify the GET request that is sent to the ClientCredentialFlow 'issuer url'. The intercepted credentials can be used to acquire authentication data from the OAuth2.0 server to then authenticate with an Apache Pulsar cluster. An attacker can only take advantage of this vulnerability by taking control of a machine 'between' the client and the server. The attacker must then actively manipulate traffic to perform the attack. The Apache Pulsar Python Client wraps the C++ client, so it is also vulnerable in the same way. This issue affects Apache Pulsar C++ Client and Python Client versions 2.7.0 to 2.7.4; 2.8.0 to 2.8.3; 2.9.0 to 2.9.2; 2.10.0 to 2.10.1; 2.6.4 and earlier. Any users running affected versions of the C++ Client or the Python Client should rotate vulnerable OAuth2.0 credentials, including client_id and client_secret. 2.7 C++ and Python Client users should upgrade to 2.7.5 and rotate vulnerable OAuth2.0 credentials. 2.8 C++ and Python Client users should upgrade to 2.8.4 and rotate vulnerable OAuth2.0 credentials. 2.9 C++ and Python Client users should upgrade to 2.9.3 and rotate vulnerable OAuth2.0 credentials. 2.10 C++ and Python Client users should upgrade to 2.10.2 and rotate vulnerable OAuth2.0 credentials. 3.0 C++ users are unaffected and 3.0 Python Client users will be unaffected when it is released. 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This vulnerability allows an attacker to perform a man in the middle attack and intercept and/or modify the GET request that is sent to the ClientCredentialFlow 'issuer url'. The intercepted credentials can be used to acquire authentication data from the OAuth2.0 server to then authenticate with an Apache Pulsar cluster. An attacker can only take advantage of this vulnerability by taking control of a machine 'between' the client and the server. The attacker must then actively manipulate traffic to perform the attack. The Apache Pulsar Python Client wraps the C++ client, so it is also vulnerable in the same way. This issue affects Apache Pulsar C++ Client and Python Client versions 2.7.0 to 2.7.4; 2.8.0 to 2.8.3; 2.9.0 to 2.9.2; 2.10.0 to 2.10.1; 2.6.4 and earlier. Any users running affected versions of the C++ Client or the Python Client should rotate vulnerable OAuth2.0 credentials, including client_id and client_secret. 2.7 C++ and Python Client users should upgrade to 2.7.5 and rotate vulnerable OAuth2.0 credentials. 2.8 C++ and Python Client users should upgrade to 2.8.4 and rotate vulnerable OAuth2.0 credentials. 2.9 C++ and Python Client users should upgrade to 2.9.3 and rotate vulnerable OAuth2.0 credentials. 2.10 C++ and Python Client users should upgrade to 2.10.2 and rotate vulnerable OAuth2.0 credentials. 3.0 C++ users are unaffected and 3.0 Python Client users will be unaffected when it is released. Any users running the C++ and Python Client for 2.6 or less should upgrade to one of the above patched versions."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2023-01-17T09:19:21.073Z"}}}, "cveMetadata": {"cveId": "CVE-2022-33684", "state": "PUBLISHED", "dateUpdated": "2025-05-02T18:58:10.037Z", "dateReserved": "2022-06-15T00:00:00.000Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2022-11-04T00:00:00.000Z", "assignerShortName": "apache"}, "dataVersion": "5.1"}

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This vulnerability allows an attacker to perform a man in the middle attack and intercept and/or modify the GET request that is sent to the ClientCredentialFlow 'issuer url'. The intercepted credentials can be used to acquire authentication data from the OAuth2.0 server to then authenticate with an Apache Pulsar cluster. An attacker can only take advantage of this vulnerability by taking control of a machine 'between' the client and the server. The attacker must then actively manipulate traffic to perform the attack. The Apache Pulsar Python Client wraps the C++ client, so it is also vulnerable in the same way. This issue affects Apache Pulsar C++ Client and Python Client versions 2.7.0 to 2.7.4; 2.8.0 to 2.8.3; 2.9.0 to 2.9.2; 2.10.0 to 2.10.1; 2.6.4 and earlier. Any users running affected versions of the C++ Client or the Python Client should rotate vulnerable OAuth2.0 credentials, including client_id and client_secret. 2.7 C++ and Python Client users should upgrade to 2.7.5 and rotate vulnerable OAuth2.0 credentials. 2.8 C++ and Python Client users should upgrade to 2.8.4 and rotate vulnerable OAuth2.0 credentials. 2.9 C++ and Python Client users should upgrade to 2.9.3 and rotate vulnerable OAuth2.0 credentials. 2.10 C++ and Python Client users should upgrade to 2.10.2 and rotate vulnerable OAuth2.0 credentials. 3.0 C++ users are unaffected and 3.0 Python Client users will be unaffected when it is released. Any users running the C++ and Python Client for 2.6 or less should upgrade to one of the above patched versions."}, {"lang": "es", "value": "El cliente Apache Pulsar C++ no verifica los certificados TLS de los peers al realizar llamadas HTTPS para el flujo de credenciales del cliente OAuth2.0, incluso cuando tlsAllowInsecureConnection est\u00e1 deshabilitado mediante la configuraci\u00f3n. Esta vulnerabilidad permite a un atacante realizar un ataque intermediario e interceptar y/o modificar la solicitud GET que se env\u00eda a la 'URL del emisor' de ClientCredentialFlow. Las credenciales interceptadas se pueden utilizar para adquirir datos de autenticaci\u00f3n del servidor OAuth2.0 para luego autenticarse con un cl\u00faster Apache Pulsar. Un atacante s\u00f3lo puede aprovechar esta vulnerabilidad tomando el control de una m\u00e1quina \"entre\" el cliente y el servidor. Luego, el atacante debe manipular activamente el tr\u00e1fico para realizar el ataque. El cliente Apache Pulsar Python envuelve el cliente C++, por lo que tambi\u00e9n es vulnerable de la misma manera. Este problema afecta a las versiones 2.7.0 a 2.7.4 del cliente Apache Pulsar C++ y del cliente Python; 2.8.0 a 2.8.3; 2.9.0 a 2.9.2; 2.10.0 a 2.10.1; 2.6.4 y anteriores. Cualquier usuario que ejecute versiones afectadas del Cliente C++ o del Cliente Python debe rotar las credenciales OAuth2.0 vulnerables, incluidas client_id y client_secret. Los usuarios de 2.7 C++ y Python Client deben actualizar a 2.7.5 y rotar las credenciales vulnerables de OAuth2.0. Los usuarios de 2.8 C++ y Python Client deben actualizar a 2.8.4 y rotar las credenciales vulnerables de OAuth2.0. Los usuarios de 2.9 C++ y Python Client deben actualizar a 2.9.3 y rotar las credenciales vulnerables de OAuth2.0. Los usuarios de 2.10 C++ y Python Client deben actualizar a 2.10.2 y rotar las credenciales vulnerables de OAuth2.0. Los usuarios de 3.0 C++ no se ven afectados y los usuarios de 3.0 Python Client no se ver\u00e1n afectados cuando se lance. Cualquier usuario que ejecute C++ y Python Client para 2.6 o menos debe actualizar a una de las versiones parcheadas anteriores."}], "id": "CVE-2022-33684", "lastModified": "2026-06-17T04:49:15.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "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:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "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:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-33684", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-05-02T18:56:43.494236Z", "version": "2.0.3"}}]}, "published": "2022-11-04T12:15:13.123", "references": [{"source": "security@apache.org", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://huntr.dev/bounties/df89b724-3201-47aa-b8cd-282e112a566f"}, {"source": "security@apache.org", "tags": ["Issue Tracking", "Mailing List", "Vendor Advisory"], "url": "https://lists.apache.org/thread/ky1ssskvkj00y36k7nys9b5gm5jjrzwv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://huntr.dev/bounties/df89b724-3201-47aa-b8cd-282e112a566f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mailing List", "Vendor Advisory"], "url": "https://lists.apache.org/thread/ky1ssskvkj00y36k7nys9b5gm5jjrzwv"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "security@apache.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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