CVE-2022-33682

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The vulnerability is for both the pulsar+ssl protocol and HTTPS. 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 by providing the client with a cryptographically valid certificate for an unrelated host. This issue affects Apache Pulsar Broker, Proxy, and WebSocket Proxy 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; 2.6.4 and earlier."}], "metrics": [{"other": {"content": {"other": "high"}, "type": "unknown"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-09-23T09:25:14.000Z", "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://lists.apache.org/thread/l0ynfl161qghwfcgbbl8ld9hzbl9t3yx"}], "source": {"discovery": "UNKNOWN"}, "title": "Disabled Hostname Verification makes Brokers, Proxies vulnerable to MITM attack", "workarounds": [{"lang": "en", "value": "Any users running affected versions of the Pulsar Broker, Pulsar Proxy, or Pulsar WebSocket Proxy should rotate static authentication data vulnerable to man in the middle attacks used by these applications, including tokens and passwords. \n\nTo enable hostname verification, update the following configuration files.\n\nIn the Broker configuration (broker.conf, by default) and in the WebSocket Proxy configuration (websocket.conf, by default), set:\n\nbrokerClient_tlsHostnameVerificationEnable=true\n\nIn Pulsar Helm chart deployments, the Broker and WebSocket Proxy setting name should be prefixed with \"PULSAR_PREFIX_\".\n\nIn the Proxy configuration (proxy.conf, by default), set:\n\ntlsHostnameVerificationEnabled=true\n\n2.7 users should upgrade Pulsar Brokers, Proxies, and WebSocket Proxies to 2.7.5, rotate vulnerable authentication data, including tokens and passwords, and apply the above configuration.\n2.8 users should upgrade Pulsar Brokers, Proxies, and WebSocket Proxies to 2.8.4, rotate vulnerable authentication data, including tokens and passwords, and apply the above configuration.\n2.9 users should upgrade Pulsar Brokers, Proxies, and WebSocket Proxies to 2.9.3, rotate vulnerable authentication data, including tokens and passwords, and apply the above configuration.\n2.10 users should upgrade Pulsar Brokers, Proxies, and WebSocket Proxies to 2.10.1, rotate vulnerable authentication data, including tokens and passwords, and apply the above configuration.\nAny users running Pulsar Brokers, Proxies, and WebSocket Proxies for 2.6.4 and earlier should upgrade to one of the above patched versions, rotate vulnerable authentication data, including tokens and passwords, and apply the above configuration."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@apache.org", "ID": "CVE-2022-33682", "STATE": "PUBLIC", "TITLE": "Disabled Hostname Verification makes Brokers, Proxies vulnerable to MITM attack"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Apache Pulsar", "version": {"version_data": [{"version_affected": "<=", "version_name": "2.7", "version_value": "2.7.4"}, {"version_affected": "<=", "version_name": "2.8", "version_value": "2.8.3"}, {"version_affected": "<=", "version_name": "2.9", "version_value": "2.9.2"}, {"version_affected": "=", "version_name": "2.10", "version_value": "2.10.0"}, {"version_affected": "<=", "version_name": "2.6 and earlier", "version_value": "2.6.4"}]}}]}, "vendor_name": "Apache Software Foundation"}]}}, "credit": [{"lang": "eng", "value": "This issue was discovered by Michael Marshall of DataStax."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "TLS hostname verification cannot be enabled in the Pulsar Broker's Java Client, the Pulsar Broker's Java Admin Client, the Pulsar WebSocket Proxy's Java Client, and the Pulsar Proxy's Admin Client leaving intra-cluster connections and geo-replication connections vulnerable to man in the middle attacks, which could leak credentials, configuration data, message data, and any other data sent by these clients. The vulnerability is for both the pulsar+ssl protocol and HTTPS. 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 by providing the client with a cryptographically valid certificate for an unrelated host. 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The vulnerability is for both the pulsar+ssl protocol and HTTPS. 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 by providing the client with a cryptographically valid certificate for an unrelated host. This issue affects Apache Pulsar Broker, Proxy, and WebSocket Proxy 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; 2.6.4 and earlier."}, {"lang": "es", "value": "Una verificaci\u00f3n del nombre de host TLS no puede habilitarse en Pulsar Brokers Java Client, Pulsar Brokers Java Admin Client, Pulsar WebSocket Proxys Java Client, Pulsar Proxys Admin Client, dejando las conexiones intra-cl\u00faster y las conexiones de geo-replicaci\u00f3n vulnerables a ataques de tipo man in the middle, que podr\u00edan filtrar credenciales, datos de configuraci\u00f3n, datos de mensajes y cualquier otro dato enviado por estos clientes. La vulnerabilidad es tanto para el protocolo pulsar+ssl como para HTTPS. Un atacante s\u00f3lo puede aprovecharse de esta vulnerabilidad al tomar el control de una m\u00e1quina \"entre\" el cliente y el servidor. El atacante debe entonces manipular activamente el tr\u00e1fico para llevar a cabo el ataque al proporcionar al cliente un certificado criptogr\u00e1ficamente v\u00e1lido para un host no relacionado. Este problema afecta a Apache Pulsar Broker, Proxy y WebSocket Proxy versiones 2.7.0 a 2.7.4; 2.8.0 a 2.8.3; 2.9.0 a 2.9.2; 2.10.0; 2.6.4 y anteriores."}], "id": "CVE-2022-33682", "lastModified": "2026-06-17T04:49:14.793", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-33682", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-05-27T14:45:45.479249Z", "version": "2.0.3"}}]}, "published": "2022-09-23T10:15:10.297", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.apache.org/thread/l0ynfl161qghwfcgbbl8ld9hzbl9t3yx"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.apache.org/thread/l0ynfl161qghwfcgbbl8ld9hzbl9t3yx"}], "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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