CVE-2017-18883

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "72250CFB-47F9-40AE-BBD0-179D27CCF49D", "versionEndExcluding": "4.1.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FE7E6F1-5B34-4D19-8B93-ED2E9EFFCAF3", "versionEndExcluding": "4.2.1", "versionStartIncluding": "4.2.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "FB71A82C-2F6A-49EC-A541-1600304F4D37", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "91E5A299-021B-451B-95E2-4DC2DD6FF50B", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "471DFF36-36F3-4904-B5E9-091C259181A6", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "A8772DEC-C002-443E-9609-1CC2A6FD8037", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Mattermost Server versiones anteriores a 4.3.0, 4.2.1 y 4.1.2, cuando sirve como proveedor de servicios OAuth versi\u00f3n 2.0. Hay poca entrop\u00eda para los datos de autorizaci\u00f3n"}], "id": "CVE-2017-18883", "lastModified": "2026-06-17T01:13:45.420", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-06-19T19:15:10.310", "references": [{"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://mattermost.com/security-updates/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://mattermost.com/security-updates/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-331"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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