{ "id": "CVE-2020-6809", "sourceIdentifier": "security@mozilla.org", "published": "2020-03-25T22:15:12.623", "lastModified": "2021-07-21T11:39:23.747", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74." }, { "lang": "es", "value": "Cuando una Web Extension ten\u00eda el permiso de todas las direcciones URL y realizaba una petici\u00f3n de extracci\u00f3n con un modo establecido en \"same-origin\", era posible que la Web Extension lea archivos locales. Esta vulnerabilidad afecta a Firefox versiones anteriores a 74." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "versionEndExcluding": "74.0", "matchCriteriaId": "9AC2847A-B7E3-4002-8236-F908BBF7272A" } ] } ] } ], "references": [ { "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1420296", "source": "security@mozilla.org", "tags": [ "Permissions Required", "Vendor Advisory" ] }, { "url": "https://www.mozilla.org/security/advisories/mfsa2020-08/", "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ] } ] }