{"containers": {"cna": {"affected": [{"product": "matrix-nio", "vendor": "poljar", "versions": [{"status": "affected", "version": "< 0.20"}]}], "descriptions": [{"lang": "en", "value": "matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-322", "description": "CWE-322: Key Exchange without Entity Authentication", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-287", "description": "CWE-287: Improper Authentication", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-09-29T14:35:10", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0"}], "source": {"advisory": "GHSA-w4pr-4vjg-hffh", "discovery": "UNKNOWN"}, "title": "When matrix-nio receives forwarded room keys, the receiver doesn't check if it requested the key from the forwarder", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2022-39254", "STATE": "PUBLIC", "TITLE": "When matrix-nio receives forwarded room keys, the receiver doesn't check if it requested the key from the forwarder"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "matrix-nio", "version": {"version_data": [{"version_value": "< 0.20"}]}}]}, "vendor_name": "poljar"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-322: Key Exchange without Entity Authentication"}]}, {"description": [{"lang": "eng", "value": "CWE-287: Improper Authentication"}]}]}, "references": {"reference_data": [{"name": "https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh", "refsource": "CONFIRM", "url": "https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh"}, {"name": "https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0", "refsource": "MISC", "url": "https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0"}]}, "source": {"advisory": "GHSA-w4pr-4vjg-hffh", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T12:00:43.472Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2022-39254", "datePublished": "2022-09-29T14:35:10", "dateReserved": "2022-09-02T00:00:00", "dateUpdated": "2024-08-03T12:00:43.472Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:matrix-nio_project:matrix-nio:*:*:*:*:*:*:*:*", "matchCriteriaId": "506DDAC5-7A26-4D1C-A74A-A49F6CD49F31", "versionEndExcluding": "0.20", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue."}, {"lang": "es", "value": "matrix-nio es una librer\u00eda cliente de Matrix en Python, dise\u00f1ada seg\u00fan los principios de sans I/O. En versiones anteriores a 0.20, cuando los usuarios solicitaban una llave de habitaci\u00f3n desde sus dispositivos, el software recordaba correctamente la petici\u00f3n. Una vez que reciben una llave de habitaci\u00f3n reenviada, la aceptan sin comprobar de qui\u00e9n procede la llave de habitaci\u00f3n. Esto permite que los servidores dom\u00e9sticos intenten introducir llaves de habitaci\u00f3n de dudosa validez, montando potencialmente un ataque de suplantaci\u00f3n de identidad. La versi\u00f3n 0.20 corrige el problema"}], "id": "CVE-2022-39254", "lastModified": "2023-07-13T17:24:54.553", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2022-09-29T15:15:10.513", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-322"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}