CVE-2017-7821

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "56", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "FEC7D85F-EE10-4144-B49D-DC88DE61352E", "versionEndIncluding": "55.0.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. This vulnerability affects Firefox < 56."}, {"lang": "es", "value": "Una vulnerabilidad en el que WebExtensions puede descargar e intentar abrir un archivo de tipos que no sean ejecutables. Esto se puede desencadenar sin la interacci\u00f3n expresa del usuario para las acciones de descarga y apertura de archivos. Esto se podr\u00eda utilizar para provocar vulnerabilidades conocidas en los programas que manipula dichos tipos de documentos. Esta vulnerabilidad afecta a las versiones anteriores a la 56 de Firefox."}], "id": "CVE-2017-7821", "lastModified": "2026-06-17T01:25:16.903", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-06-11T21:29:10.920", "references": [{"source": "security@mozilla.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/101057"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039465"}, {"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1346515"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/101057"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039465"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1346515"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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