CVE-2017-0881

{"id": "CVE-2017-0881", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2017-03-28T02:59:01.463", "references": [{"url": "http://www.securityfocus.com/bid/97159", "tags": ["Third Party Advisory", "Vendor Advisory"], "source": "support@hackerone.com"}, {"url": "https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f", "tags": ["Patch", "Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ", "tags": ["Patch", "Release Notes", "Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "http://www.securityfocus.com/bid/97159", "tags": ["Third Party Advisory", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ", "tags": ["Patch", "Release Notes", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-200"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server."}, {"lang": "es", "value": "Un error en la implementaci\u00f3n de una funci\u00f3n de suscripci\u00f3n autom\u00e1tica en la ruta check_stream_exists del servidor de aplicaciones de chat en grupo Zulip en versiones anteriores a 1.4.3 permiti\u00f3 a un usuario autenticado suscribirse a un flujo privado que deber\u00eda haber requerido una invitaci\u00f3n de un miembro existente para unirse. El problema afecta a todas las versiones liberadas anteriormente del servidor Zulip."}], "lastModified": "2025-04-20T01:37:25.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C798D82E-5E3A-4784-9D67-3977B15FE8D5", "versionEndExcluding": "1.4.3"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}