CVE-2016-2821

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"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor."}, {"lang": "es", "value": "Vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n de memoria en la clase mozilla::dom::Element en Mozilla Firefox en versiones anteriores a 47.0 y Firefox ESR 45.x en versiones anteriores a 45.2, cuando el modo contenteditable est\u00e1 habilitado, permite a atacantes remotos ejecutar c\u00f3digo arbitrario o provocar una denegaci\u00f3n de servicio (corrupci\u00f3n de la memoria din\u00e1mica) desencadenando la eliminaci\u00f3n de elementos DOM que fueron creados por el editor."}], "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/416.html\">CWE-416: Use After Free</a>", "id": "CVE-2016-2821", "lastModified": "2026-06-17T00:44:31.637", "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": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-06-13T10:59:04.370", "references": [{"source": "security@mozilla.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html"}, {"source": "security@mozilla.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html"}, {"source": "security@mozilla.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html"}, {"source": "security@mozilla.org", "url": "http://www.debian.org/security/2016/dsa-3600"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "http://www.mozilla.org/security/announce/2016/mfsa2016-51.html"}, {"source": "security@mozilla.org", "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"source": "security@mozilla.org", "url": "http://www.securityfocus.com/bid/91075"}, {"source": "security@mozilla.org", "url": "http://www.securitytracker.com/id/1036057"}, {"source": "security@mozilla.org", "url": "http://www.ubuntu.com/usn/USN-2993-1"}, {"source": "security@mozilla.org", "url": "https://access.redhat.com/errata/RHSA-2016:1217"}, {"source": "security@mozilla.org", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1271460"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html"}, {"source": 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"weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges firehack as the original reporter.", "affected_release": [{"advisory": "RHSA-2016:1217", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "firefox-0:45.2.0-1.el5_11", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2016-06-08T00:00:00Z"}, {"advisory": "RHSA-2016:1217", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:45.2.0-1.el6_8", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-06-08T00:00:00Z"}, {"advisory": "RHSA-2016:1217", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:45.2.0-1.el7_2", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2016-06-08T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Use-after-free deleting tables from a contenteditable document (MFSA 2016-51)", "id": "1342892", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1342892"}, "csaw": false, "cvss": {"cvss_base_score": "5.1", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "status": "verified"}, "details": ["Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor."], "name": "CVE-2016-2821", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2016-06-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-2821\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-2821\nhttps://www.mozilla.org/security/announce/2016/mfsa2016-51.html"], "threat_severity": "Moderate"}

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