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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*", "matchCriteriaId": "7BDFCFCB-6E90-4F29-9852-A3099DF05843", "versionEndIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:internet_explorer:5.01:*:*:*:*:*:*:*", "matchCriteriaId": "6219D36E-9E2C-4DC7-8FD5-FAD144A333F6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "HTML e-mail feature in Internet Explorer 5.5 and earlier allows attackers to execute attachments by setting an unusual MIME type for the attachment, which Internet Explorer does not process correctly."}, {"lang": "es", "value": "Funcionalidad HTML en Internet Explorer 5.5 y anteriores, que permite al atacante la ejecuci\u00f3n de un archivo adjunto. Se consigue gracias al env\u00edo de cabeceras MIME inv\u00e1lidas para el adjunto que le permiten disfrazarse como un tipo de archivo no ejecutable. \r\n\r\nEl correo electr\u00f3nico v\u00eda HTML se representa en p\u00e1ginas web que el explorador es capaz de interpretar. Cuando el correo contiene ficheros adjuntos el Explorador tambi\u00e9n es capaz de abrir la aplicaci\u00f3n asociada a los ficheros binarios adjuntos cuyo tipo (extensi\u00f3n de archivo) est\u00e1 definido en las cabeceras MIME. \r\n\r\nSin embargo, existe un defecto en el tipo de tratamiento que es especificado para ciertos tipos MIME sin identificar. Si un atacante crea un correo HTML conteniendo un fichero adjunto ejecutable y le sustituye la informaci\u00f3n de cabecera MIME por otra, que contiene un tipo de archivo MIME reconocido, provocar\u00eda la ejecuci\u00f3n autom\u00e1tica del adjunto.\r\n\r\nUn atacante podr\u00eda usar esta vulnerabilidad en cualquiera de estos dos escenarios.\r\n\r\nEl atacante pod\u00edra generar un correo electr\u00f3nico HTML infectado sobre un sitio web \u00fd despues intentar convencer a otro usuario para que los visite. 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