{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-32323",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2023-05-08T13:26:03.880Z",
        "datePublished": "2023-05-26T13:32:01.632Z",
        "dateUpdated": "2024-08-02T15:10:24.899Z"
    },
    "containers": {
        "cna": {
            "title": "Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-20",
                            "lang": "en",
                            "description": "CWE-20: Improper Input Validation",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr"
                },
                {
                    "name": "https://github.com/matrix-org/synapse/issues/14492",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/matrix-org/synapse/issues/14492"
                },
                {
                    "name": "https://github.com/matrix-org/synapse/pull/14642",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/matrix-org/synapse/pull/14642"
                },
                {
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/"
                }
            ],
            "affected": [
                {
                    "vendor": "matrix-org",
                    "product": "synapse",
                    "versions": [
                        {
                            "version": "< 1.74.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2023-05-26T13:32:01.632Z"
            },
            "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"
                }
            ],
            "source": {
                "advisory": "GHSA-f3wc-3vxv-xmvr",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T15:10:24.899Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr"
                    },
                    {
                        "name": "https://github.com/matrix-org/synapse/issues/14492",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/matrix-org/synapse/issues/14492"
                    },
                    {
                        "name": "https://github.com/matrix-org/synapse/pull/14642",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/matrix-org/synapse/pull/14642"
                    },
                    {
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}