CVE-2016-5270

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "C56407AD-F303-4E6E-A64E-4AFA23BFB739", "versionEndIncluding": "48.0.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*", "matchCriteriaId": "4123CC23-4443-4B13-A064-04B0B04354FE", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*", "matchCriteriaId": "1E084D09-97BE-43E1-94D1-05206E513B99", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "915E92FE-8049-4EA5-95B8-F3EA25F78546", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:*", "matchCriteriaId": "CA9E7A47-5E77-4736-920A-93283E30DC7C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in the nsCaseTransformTextRunFactory::TransformString function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to cause a denial of service (boolean out-of-bounds write) or possibly have unspecified other impact via Unicode characters that are mishandled during text conversion."}, {"lang": "es", "value": "Desbordamiento de b\u00fafer basado en memoria din\u00e1mica (heap) en la funci\u00f3n nsCaseTransformTextRunFactory::TransformString en Mozilla Firefox en versiones anteriores a la 49.0, Firefox ESR en versiones 45.x anteriores a la 45.4 y Thunderbird en versiones anteriores a la 45.4 permite que los atacantes remotos provoquen una denegaci\u00f3n de servicio (escritura de valores boleanos fuera de l\u00edmites) o, posiblemente, provocar otro impacto no especificado mediante caracteres unicode que se manejan incorrectamente durante la conversi\u00f3n de texto."}], "id": "CVE-2016-5270", "lastModified": "2026-06-17T00:49:05.463", "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": "2016-09-22T22:59:03.677", "references": [{"source": "security@mozilla.org", "url": "http://rhn.redhat.com/errata/RHSA-2016-1912.html"}, {"source": "security@mozilla.org", "url": "http://www.debian.org/security/2016/dsa-3674"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"}, {"source": "security@mozilla.org", "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"}, {"source": "security@mozilla.org", "url": "http://www.securityfocus.com/bid/93049"}, {"source": "security@mozilla.org", "url": "http://www.securitytracker.com/id/1036852"}, {"source": "security@mozilla.org", "tags": ["Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1291016"}, {"source": "security@mozilla.org", "url": "https://security.gentoo.org/glsa/201701-15"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2016-86/"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2016-88/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2016-1912.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2016/dsa-3674"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/93049"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1036852"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1291016"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/201701-15"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.mozilla.org/security/advisories/mfsa2016-86/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.mozilla.org/security/advisories/mfsa2016-88/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Atte Kettunen as the original reporter.", "affected_release": [{"advisory": "RHSA-2016:1912", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "firefox-0:45.4.0-1.el5_11", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2016-09-21T00:00:00Z"}, {"advisory": "RHSA-2016:1912", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:45.4.0-1.el6_8", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-09-21T00:00:00Z"}, {"advisory": "RHSA-2016:1912", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:45.4.0-1.el7_2", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2016-09-21T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Heap-buffer-overflow in nsCaseTransformTextRunFactory::TransformString (MFSA 2016-85, MFSA 2016-86)", "id": "1377552", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1377552"}, "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"}, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "details": ["Heap-based buffer overflow in the nsCaseTransformTextRunFactory::TransformString function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to cause a denial of service (boolean out-of-bounds write) or possibly have unspecified other impact via Unicode characters that are mishandled during text conversion."], "name": "CVE-2016-5270", "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": "2016-09-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-5270\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-5270\nhttps://www.mozilla.org/security/advisories/mfsa2016-85/\nhttps://www.mozilla.org/security/advisories/mfsa2016-86/"], "threat_severity": "Important"}

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