{"id":73923,"date":"2020-03-12T20:42:15","date_gmt":"2020-03-12T17:42:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva"},"modified":"2020-03-12T20:42:15","modified_gmt":"2020-03-12T17:42:15","slug":"google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","title":{"rendered":"Google ha presentado un bloqueador de inyecci\u00f3n para dispositivos USB maliciosos","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

La empresa Google ha publicado<\/a><\/noindex> herramienta ukip<\/a><\/noindex>, permite rastrear y bloquear del ataque<\/a><\/noindex>, llevadas a cabo utilizando dispositivos USB maliciosos que simulan un teclado USB para la inserci\u00f3n encubierta de pulsaciones de teclado ficticias (por ejemplo, durante un ataque puede ser simulada<\/a><\/noindex> una secuencia de pulsaciones que abre un terminal y ejecuta comandos al azar en \u00e9l). El c\u00f3digo est\u00e1 escrito en Python y se distribuye<\/a><\/noindex> bajo la licencia Apache 2.0. <\/p>\n

La utilidad se ejecuta como un servicio systemd y puede operar en modos de monitoreo y prevenci\u00f3n de ataques. En el modo de monitoreo, se identifican posibles ataques y se registran las actividades relacionadas con intentos de uso indebido de dispositivos USB para la inserci\u00f3n de entradas. En el modo de protecci\u00f3n, al detectar un dispositivo potencialmente malicioso, este se desconecta del sistema a nivel de controlador. <\/p>\n

La actividad maliciosa se determina en funci\u00f3n del an\u00e1lisis heur\u00edstico de la naturaleza de la entrada y los retrasos entre pulsaciones de teclas \u2014 un ataque generalmente se lleva a cabo en presencia del usuario y para que pase desapercibido, las pulsaciones simuladas se env\u00edan con retrasos m\u00ednimos at\u00edpicos a los de la entrada de teclado habitual. Se han propuesto dos configuraciones para modificar la l\u00f3gica de detecci\u00f3n de ataques: KEYSTROKE_WINDOW y ABNORMAL_TYPING (la primera define el n\u00famero de pulsaciones para el an\u00e1lisis y la segunda el intervalo umbral entre las pulsaciones).<\/p>\n

El ataque puede llevarse a cabo con un dispositivo que no despierte sospechas y con firmware modificado; por ejemplo, se puede simular un teclado en una memoria USB<\/a><\/noindex>, un hub USB<\/a><\/noindex>, una c\u00e1mara web<\/a><\/noindex> o un smartphone<\/a><\/noindex> el comportamiento difiere un poco). Y si, de repente, te conectas sin cierta coordinaci\u00f3n, eludiendo las reglas de enrutamiento de la red en un segmento cerrado, el atacante te encontrar\u00e1 r\u00e1pidamente. Kali NetHunter<\/a><\/noindex> se ofrece una utilidad especial para la inserci\u00f3n de entradas desde un smartphone conectado al puerto USB que opera en una plataforma Android). Para complicar los ataques a trav\u00e9s de USB, adem\u00e1s de ukip tambi\u00e9n se puede utilizar el paquete USBGuard<\/a><\/noindex>, que permite la conexi\u00f3n de dispositivos solo desde una lista blanca o bloquea la posibilidad de conectar dispositivos USB no autorizados durante el bloqueo de la pantalla y no permite trabajar con tales dispositivos despu\u00e9s de que el usuario regrese.<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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