Show plain JSON{"containers": {"cna": {"affected": [{"product": "gomatrixserverlib", "vendor": "matrix-org", "versions": [{"status": "affected", "version": "< 0.9.3 for dendrite"}, {"status": "affected", "version": " < 723fd49 for gomatrixserverlib"}]}], "descriptions": [{"lang": "en", "value": "gomatrixserverlib is a Go library for matrix protocol federation. Dendrite is a Matrix homeserver written in Go, an alternative to Synapse. The power level parsing within gomatrixserverlib was failing to parse the `\"events_default\"` key of the `m.room.power_levels` event, defaulting the event default power level to zero in all cases. Power levels are the matrix terminology for user access level. In rooms where the `\"events_default\"` power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers. gomatrixserverlib contains a fix as of commit `723fd49` and Dendrite 0.9.3 has been updated accordingly. Matrix rooms where the `\"events_default\"` power level has not been changed from the default of zero are not vulnerable. Users are advised to upgrade. There are no known workarounds for this issue."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-19T20:35:09", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575"}, {"tags": ["x_refsource_MISC"], "url": "https://matrix.org/docs/guides/moderation/#power-levels"}], "source": {"advisory": "GHSA-grvv-h2f9-7v9c", "discovery": "UNKNOWN"}, "title": "Incorrect parsing of access level in gomatrixserverlib and dendrite", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2022-36009", "STATE": "PUBLIC", "TITLE": "Incorrect parsing of access level in gomatrixserverlib and dendrite"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "gomatrixserverlib", "version": {"version_data": [{"version_value": "< 0.9.3 for dendrite"}, {"version_value": " < 723fd49 for gomatrixserverlib"}]}}]}, "vendor_name": "matrix-org"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "gomatrixserverlib is a Go library for matrix protocol federation. Dendrite is a Matrix homeserver written in Go, an alternative to Synapse. The power level parsing within gomatrixserverlib was failing to parse the `\"events_default\"` key of the `m.room.power_levels` event, defaulting the event default power level to zero in all cases. Power levels are the matrix terminology for user access level. In rooms where the `\"events_default\"` power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers. gomatrixserverlib contains a fix as of commit `723fd49` and Dendrite 0.9.3 has been updated accordingly. Matrix rooms where the `\"events_default\"` power level has not been changed from the default of zero are not vulnerable. Users are advised to upgrade. There are no known workarounds for this issue."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-863: Incorrect Authorization"}]}]}, "references": {"reference_data": [{"name": "https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c", "refsource": "CONFIRM", "url": "https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c"}, {"name": "https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575", "refsource": "MISC", "url": "https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575"}, {"name": "https://matrix.org/docs/guides/moderation/#power-levels", "refsource": "MISC", "url": "https://matrix.org/docs/guides/moderation/#power-levels"}]}, "source": {"advisory": "GHSA-grvv-h2f9-7v9c", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T09:51:59.794Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://matrix.org/docs/guides/moderation/#power-levels"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2022-36009", "datePublished": "2022-08-19T20:35:09", "dateReserved": "2022-07-15T00:00:00", "dateUpdated": "2024-08-03T09:51:59.794Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"} 
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