cve-2023-32323
Vulnerability from cvelistv5
Published
2023-05-26 13:32
Modified
2024-08-02 15:10
Severity ?
EPSS score ?
Summary
Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
▼ | matrix-org | synapse |
Version: < 1.74.0 |
|
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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" } ], "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" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-20", "description": "CWE-20: Improper Input Validation", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2023-05-26T13:32:01.632Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "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/" } ], "source": { "advisory": "GHSA-f3wc-3vxv-xmvr", "discovery": "UNKNOWN" }, "title": "Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites" } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2023-32323", "datePublished": "2023-05-26T13:32:01.632Z", "dateReserved": "2023-05-08T13:26:03.880Z", "dateUpdated": "2024-08-02T15:10:24.899Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2023-32323\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2023-05-26T14:15:10.827\",\"lastModified\":\"2023-09-18T04:15:09.300\",\"vulnStatus\":\"Modified\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4},{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\",\"baseScore\":5.0,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.1,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.74.0\",\"matchCriteriaId\":\"D7B262AE-3361-41B7-8BF8-D893316A98C4\"}]}]}],\"references\":[{\"url\":\"https://github.com/matrix-org/synapse/issues/14492\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Issue Tracking\"]},{\"url\":\"https://github.com/matrix-org/synapse/pull/14642\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Mitigation\",\"Vendor Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/\",\"source\":\"security-advisories@github.com\"}]}}" } }
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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.