CVE-2023-32323

{"id": "CVE-2023-32323", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.1}]}, "published": "2023-05-26T14:15:10.827", "references": [{"url": "https://github.com/matrix-org/synapse/issues/14492", "tags": ["Exploit", "Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/matrix-org/synapse/pull/14642", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/", "source": "security-advisories@github.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Secondary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently.\n\n"}, {"lang": "es", "value": "Synapse es un servidor dom\u00e9stico Matrix de c\u00f3digo abierto escrito y mantenido por la Fundaci\u00f3n Matrix.org. Un usuario malicioso en un servidor dom\u00e9stico X de Synapse con permiso para crear ciertos eventos de estado puede deshabilitar la federaci\u00f3n saliente de X a un servidor dom\u00e9stico Y arbitrario. Las instancias de Synapse con la federaci\u00f3n deshabilitada no se ven afectadas. En las versiones de Synapse hasta la 1.73 inclusive, Synapse no limitaba el tama\u00f1o de `invite_room_state`, lo que significa que era posible crear un evento de invitaci\u00f3n arbitrariamente grande. Synapse 1.74 se niega a crear campos `invite_room_state` de gran tama\u00f1o. Los operadores de servidores deben actualizar urgentemente a Synapse 1.74 o posterior."}], "lastModified": "2023-09-18T04:15:09.300", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D7B262AE-3361-41B7-8BF8-D893316A98C4", "versionEndExcluding": "1.74.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}