CVE-2017-7814

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This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4."}, {"lang": "es", "value": "Las descargas de archivos codificados con elementos URL \"blob:\" y \"data:\" omit\u00edan las comprobaciones de descarga de archivos normales a pesar de la caracter\u00edstica Phishing and Malware Protection y sus listas de bloqueo de p\u00e1ginas y archivos sospechosos. Esto permitiria a los sitios maliciosos enga\u00f1ar a los usuarios para que descarguen ejecutables que, de otra manera, se habr\u00edan detectado como sospechosos. Esta vulnerabilidad afecta a las versiones anteriores a la 56 de Firefox, las versiones anteriores a la 52.4 de Firefox ESR y las versiones anteriores a la 52.4 de Thunderbird."}], "id": "CVE-2017-7814", "lastModified": "2026-06-17T01:25:16.000", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-06-11T21:29:10.547", "references": [{"source": "security@mozilla.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/101059"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039465"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2831"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2885"}, {"source": "security@mozilla.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1376036"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201803-14"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-3987"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-4014"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-22/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-23/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/101059"}, {"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": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2831"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2885"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1376036"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/201803-14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-3987"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-4014"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-22/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2017-23/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Fran\u00e7ois Marier as the original reporter.", "affected_release": [{"advisory": "RHSA-2017:2831", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:52.4.0-1.el6_9", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-09-28T00:00:00Z"}, {"advisory": "RHSA-2017:2885", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:52.4.0-2.el6_9", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-10-11T00:00:00Z"}, {"advisory": "RHSA-2017:2831", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:52.4.0-1.el7_4", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-09-28T00:00:00Z"}, {"advisory": "RHSA-2017:2885", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:52.4.0-2.el7_4", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-10-11T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Blob and data URLs bypass phishing and malware protection warnings (MFSA 2017-22)", "id": "1496652", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1496652"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-494", "details": ["File downloads encoded with \"blob:\" and \"data:\" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4."], "name": "CVE-2017-7814", "public_date": "2017-09-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-7814\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-7814\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2017-22/#CVE-2017-7814"], "threat_severity": "Moderate"}

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