{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-32683","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2023-05-11T16:33:45.731Z","datePublished":"2023-06-06T18:24:30.457Z","dateUpdated":"2025-02-13T16:54:58.218Z"},"containers":{"cna":{"title":"URL deny list bypass via oEmbed and image URLs when generating previews in Synapse","problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc"},{"name":"https://github.com/matrix-org/synapse/pull/15601","tags":["x_refsource_MISC"],"url":"https://github.com/matrix-org/synapse/pull/15601"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2/"}],"affected":[{"vendor":"matrix-org","product":"synapse","versions":[{"version":"< 1.85.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2023-06-17T02:06:12.430Z"},"descriptions":[{"lang":"en","value":"Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. A discovered oEmbed or image URL can bypass the `url_preview_url_blacklist` setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the `url_preview_ip_range_blacklist` setting (by default this only allows public IPs) and by the limited information returned to the client: 1. For discovered oEmbed URLs, any non-JSON response or a JSON response which includes non-oEmbed information is discarded. 2. For discovered image URLs, any non-image response is discarded. Systems which have URL preview disabled (via the `url_preview_enabled` setting) or have not configured a `url_preview_url_blacklist` are not affected. This issue has been addressed in version 1.85.0. Users are advised to upgrade. User unable to upgrade may also disable URL previews."}],"source":{"advisory":"GHSA-98px-6486-j7qc","discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T15:25:36.588Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc"},{"name":"https://github.com/matrix-org/synapse/pull/15601","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/matrix-org/synapse/pull/15601"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2/","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-01-07T16:25:39.026761Z","id":"CVE-2023-32683","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-01-07T16:26:12.352Z"}}]}}