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"operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 does not properly handle a ~ (tilde) character in proximity to a chunk delimiter, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document."}, {"lang": "es", "value": "La implementaci\u00f3n del juego de caracteres HZ-GB-2312 en Mozilla Firefox anterior a v17.0, Firefox ESR v10.x anterior a v10.0.11, Thunderbird anterior a v17.0, Thunderbird ESR v10.x anterior a v10.0.11, y SeaMonkey anterior a v2.14 no maneja correctamente el caracter ~ (tilde) en proximidad con un delimitador, lo que permite a atacantes remotos llevar a cabo un ataque XSS mediante un documento manipulado."}], "id": "CVE-2012-4207", "lastModified": "2026-06-16T23:44:36.947", "metrics": {"cvssMetricV2": 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{"acknowledgement": "Red Hat would like to thank Mozilla project for reporting this issue. Upstream acknowledges Masato Kinugawa as the original reporter.", "affected_release": [{"advisory": "RHSA-2012:1482", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "firefox-0:10.0.11-1.el5_8", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-11-20T00:00:00Z"}, {"advisory": "RHSA-2012:1482", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "xulrunner-0:10.0.11-1.el5_8", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-11-20T00:00:00Z"}, {"advisory": "RHSA-2012:1483", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "thunderbird-0:10.0.11-1.el5_8", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-11-20T00:00:00Z"}, {"advisory": "RHSA-2012:1482", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:10.0.11-1.el6_3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2012-11-20T00:00:00Z"}, {"advisory": "RHSA-2012:1482", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "xulrunner-0:10.0.11-1.el6_3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2012-11-20T00:00:00Z"}, {"advisory": "RHSA-2012:1483", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:10.0.11-1.el6_3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2012-11-20T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Improper character decoding in HZ-GB-2312 charset (MFSA 2012-101)", "id": "877629", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=877629"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "status": "verified"}, "details": ["The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 does not properly handle a ~ (tilde) character in proximity to a chunk delimiter, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document."], "name": "CVE-2012-4207", "public_date": "2012-11-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-4207\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-4207\nhttp://www.mozilla.org/security/announce/2012/mfsa2012-101.html"], "threat_severity": "Moderate"}

{}