<style id="elementor-post-1097">.elementor-1097 .elementor-element.elementor-element-ec2d542 img{width:500px;}.elementor-1097 .elementor-element.elementor-element-2d36c87 .elementor-button-content-wrapper{flex-direction:row-reverse;}.elementor-1097 .elementor-element.elementor-element-7c5e3aa .elementor-button-content-wrapper{flex-direction:row-reverse;}</style>{"id":1097,"date":"2021-07-02T10:41:57","date_gmt":"2021-07-02T08:41:57","guid":{"rendered":"https:\/\/www.infordisa.com\/soc\/?p=1097"},"modified":"2025-08-18T13:18:28","modified_gmt":"2025-08-18T11:18:28","slug":"1-error-en-els-xips-nfc-permet-trencar-les-seguretat-de-caixers-automatics","status":"publish","type":"post","link":"https:\/\/www.infordisa.com\/soc\/ca\/un-fallo-en-los-chips-nfc-permite-romper-las-seguridad-de-cajeros-automaticos\/","title":{"rendered":"Una fallada en els xips NFC permet trencar les seguretat de caixers autom\u00e0tics"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"1097\" class=\"elementor elementor-1097\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e19af03 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e19af03\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cdb9b52\" data-id=\"cdb9b52\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-33db1e3 elementor-widget elementor-widget-text-editor\" data-id=\"33db1e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Josep Rodr&iacute;guez, investigador y consultor de la empresa de seguridad IOActive, ha pasado el &uacute;ltimo a&ntilde;o investigando sobre las vulnerabilidades de los chips NFC que se utilizan en millones de cajeros autom&aacute;ticos y sistemas de puntos de venta de todo el mundo. Los sistemas NFC son los que permiten utilizar una tarjeta de cr&eacute;dito sin apenas contacto con el lector, para realizar un pago en un dat&aacute;fono o extraer dinero de un cajero autom&aacute;tico. Existen innumerables dispositivos integrados en tiendas, restaurantes, m&aacute;quinas expendedoras, taxis y parqu&iacute;metros de todo el mundo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec2d542 elementor-widget elementor-widget-image\" data-id=\"ec2d542\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/vulnerabilidad-nfc.jpg\" class=\"attachment-large size-large wp-image-1099\" alt=\"\" srcset=\"https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/vulnerabilidad-nfc.jpg 1024w, https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/vulnerabilidad-nfc-300x169.jpg 300w, https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/vulnerabilidad-nfc-768x432.jpg 768w, https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/vulnerabilidad-nfc-16x9.jpg 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"\/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-681c52b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"681c52b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4c7a807\" data-id=\"4c7a807\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5d13d0f elementor-widget elementor-widget-text-editor\" data-id=\"5d13d0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Josep Rodr&iacute;guez ha creado una aplicaci&oacute;n Android que permite simular las comunicaciones por radio de las tarjetas de cr&eacute;dito y aprovechar los fallos del firmware de los sistemas NFC.<\/strong> Desde un tel&eacute;fono y con la aplicaci&oacute;n, puede aprovechar una serie de fallos para bloquear los dispositivos de los puntos de venta, &ldquo;hackearlos&rdquo; para recoger y transmitir datos de las tarjetas de cr&eacute;dito, cambiar de forma transparente el valor de las transacciones e incluso bloquear los dispositivos mostrando un mensaje de <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/ransomware\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">ransomware<\/a>. <strong>Josep Rodr&iacute;guez afirma que incluso puede forzar al menos una marca de cajeros autom&aacute;ticos a dispensar dinero en efectivo, aunque ese &laquo;jackpotting&raquo; s&oacute;lo funciona en combinaci&oacute;n con otros fallos que dice haber encontrado en el software de los cajeros<\/strong>.&nbsp;<\/p><p>Josep Rodr&iacute;guez, que ha pasado a&ntilde;os probando la seguridad de los cajeros autom&aacute;ticos como consultor, dice que empez&oacute; a investigar hace un a&ntilde;o si los lectores de tarjetas NFC de los cajeros autom&aacute;ticos, vendidos en la mayor&iacute;a de los casos por la empresa de tecnolog&iacute;a de pagos ID Tech, pod&iacute;an servir de vector de entrada ante un ataque. Empez&oacute; a comprar lectores NFC y dispositivos de punto de venta en eBay y pronto descubri&oacute; que muchos de ellos padec&iacute;an del mismo fallo de seguridad: <strong>no validaba el tama&ntilde;o del paquete de datos enviado por NFC desde una tarjeta de cr&eacute;dito al lector, conocido como unidad de datos del <a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/protocolo\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>protocolo<\/a> de aplicaci&oacute;n o APDU<\/strong>.<\/p><p>Utilizando una aplicaci&oacute;n personalizada para enviar un APDU cuidadosamente dise&ntilde;ado desde su tel&eacute;fono Android con NFC, que es cientos de veces m&aacute;s grande de lo que el lector espera, Josep Rodr&iacute;guez fue capaz de provocar un &ldquo;<strong>desbordamiento de memoria intermedia<\/strong>&rdquo;, <strong>un tipo de <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a> de software de hace d&eacute;cadas que permite a un hacker corromper la memoria de un dispositivo de destino y ejecutar su propio c&oacute;digo<\/strong>.<\/p><p>Josep Rodr&iacute;guez <strong>planea compartir los detalles t&eacute;cnicos de las vulnerabilidades en un seminario web en las pr&oacute;ximas semanas<\/strong>, en parte para forzar a los clientes de los proveedores afectados a implementar los parches que las empresas han puesto a disposici&oacute;n. Pero tambi&eacute;n quiere llamar la atenci&oacute;n sobre el p&eacute;simo estado de la seguridad de los dispositivos integrados en general. Se sorprendi&oacute; al comprobar que vulnerabilidades tan simples como los desbordamientos de memoria intermedia han permanecido en tantos dispositivos de uso com&uacute;n, que manejan dinero en efectivo e informaci&oacute;n financiera sensible, nada menos.<\/p><p>Muchas de estas vulnerabilidades han estado presentes en el firmware de los dispositivos durante a&ntilde;os, y estamos usando estos dispositivos diariamente para realizar operaciones con nuestras tarjetas de cr&eacute;dito, nuestro dinero.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-596b893 elementor-widget elementor-widget-text-editor\" data-id=\"596b893\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div>Referencias:<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d36c87 elementor-widget elementor-widget-button\" data-id=\"2d36c87\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.iso.org\/standard\/36134.html\" target=\"_blank\" rel=\"nofollow\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-external-link-alt\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">ISO\/IEC 7816-4:2005 <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c5e3aa elementor-widget elementor-widget-button\" data-id=\"7c5e3aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.wired.com\/story\/atm-hack-nfc-bugs-point-of-sale\/\" target=\"_blank\" rel=\"nofollow\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-external-link-alt\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Wired<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Josep Rodr\u00edguez, investigador i consultor de l&#039;empresa de seguretat IOActive, ha passat el darrer any investigant sobre les vulnerabilitats<\/p>","protected":false},"author":2,"featured_media":1099,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[39],"tags":[37],"class_list":["post-1097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualidad","tag-nfc","masonry-post","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-25"],"acf":[],"yoast_head":"<title>Un fallo en los chips NFC permite romper las seguridad de cajeros autom\u00e1ticos - INFORDISA \/ Security Operations Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unaaldia.hispasec.com\/2021\/07\/un-fallo-en-los-chips-nfc-permite-romper-las-seguridad-de-cajeros-automaticos.html\" \/>\n<meta property=\"og:locale\" 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