CVE-2021-21396

{"containers": {"cna": {"affected": [{"product": "wire-server", "vendor": "wireapp", "versions": [{"status": "affected", "version": ">= 2021-02-16, < 2021-03-02"}]}], "descriptions": [{"lang": "en", "value": "wire-server is an open-source back end for Wire, a secure collaboration platform. In wire-server from version 2021-02-16 and before version 2021-03-02, the client metadata of all users was exposed in the `GET /users/list-clients` endpoint. The endpoint could be used by any logged in user who could request client details of any other user (no connection required) as far as they can find their User ID. The exposed metadata included id, class, type, location, time, and cookie. A user on a Wire backend could use this endpoint to find registration time and location for each device for a given list of users. As a workaround, remove `/list-clients` from nginx config. This has been fixed in version 2021-03-02."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "description": "CWE-200 Information Exposure", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-26T21:40:15.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421"}], "source": {"advisory": "GHSA-qx8q-rhq2-rg4j", "discovery": "UNKNOWN"}, "title": "Bulk list client endpoint exposes too much metadata about a client", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21396", "STATE": "PUBLIC", "TITLE": "Bulk list client endpoint exposes too much metadata about a client"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "wire-server", "version": {"version_data": [{"version_value": ">= 2021-02-16, < 2021-03-02"}]}}]}, "vendor_name": "wireapp"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "wire-server is an open-source back end for Wire, a secure collaboration platform. 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This has been fixed in version 2021-03-02."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-200 Information Exposure"}]}]}, "references": {"reference_data": [{"name": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j", "refsource": "CONFIRM", "url": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j"}, {"name": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02", "refsource": "MISC", "url": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02"}, {"name": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421", "refsource": "MISC", "url": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421"}]}, "source": {"advisory": "GHSA-qx8q-rhq2-rg4j", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:16.005Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21396", "datePublished": "2021-03-26T21:40:15.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:16.005Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "wire-server", "vendor": "wireapp", "versions": [{"status": "affected", "version": ">= 2021-02-16, < 2021-03-02"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "A94419C1-B8CA-4FC7-9DE7-A7E672A524D4", "versionEndExcluding": "2021-03-02", "versionStartIncluding": "2021-02-16", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "wire-server is an open-source back end for Wire, a secure collaboration platform. In wire-server from version 2021-02-16 and before version 2021-03-02, the client metadata of all users was exposed in the `GET /users/list-clients` endpoint. The endpoint could be used by any logged in user who could request client details of any other user (no connection required) as far as they can find their User ID. The exposed metadata included id, class, type, location, time, and cookie. A user on a Wire backend could use this endpoint to find registration time and location for each device for a given list of users. As a workaround, remove `/list-clients` from nginx config. This has been fixed in version 2021-03-02."}, {"lang": "es", "value": "wire-server es un back-end de c\u00f3digo abierto para Wire, una plataforma de colaboraci\u00f3n segura.&#xa0;En wire-server desde la versi\u00f3n 16-02-2021 y versiones anteriores a 02-03-2021, los metadatos del cliente de todos los usuarios estaban expuestos en el endpoint \"GET/users/list-clients\".&#xa0;El endpoint puede ser usado por cualquier usuario con inicio de sesi\u00f3n y que pueda pedir los detalles del cliente de cualquier otro usuario (no se requiere conexi\u00f3n) en la medida en que pueda encontrar su ID de usuario.&#xa0;Los metadatos expuestos inclu\u00edan id, clase, tipo, ubicaci\u00f3n, hora y cookie.&#xa0;Un usuario en un backend Wire podr\u00eda usar este endpoint para encontrar la hora y la ubicaci\u00f3n de registro para cada dispositivo para una lista determinada de usuarios.&#xa0;Como soluci\u00f3n alternativa, elimine \"/list-clients\" de la configuraci\u00f3n de nginx.&#xa0;Esto ha sido corregido en la versi\u00f3n 02-03-2021."}], "id": "CVE-2021-21396", "lastModified": "2026-06-17T03:35:29.163", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-26T22:15:12.947", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/releases/tag/v2021-03-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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