{"id":99301,"date":"2021-03-01T16:22:54","date_gmt":"2021-03-01T14:22:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda"},"modified":"2021-03-01T16:22:54","modified_gmt":"2021-03-01T14:22:54","slug":"uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"Vulnerabilidad en wpa_supplicant que permite la ejecuci\u00f3n remota de c\u00f3digo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

En el paquete wpa_supplicant, utilizado para la conexi\u00f3n a redes inal\u00e1mbricas en muchas distribuciones de Linux, *BSD y Android, se ha detectado una vulnerabilidad (CVE-2021-27803) que podr\u00eda ser aprovechada para ejecutar c\u00f3digo malicioso al procesar tramas de control de Wi-Fi Direct (Wi-Fi P2P) especialmente dise\u00f1adas. Para llevar a cabo el ataque, el atacante debe estar dentro del alcance de la red inal\u00e1mbrica para enviar un conjunto de tramas dise\u00f1adas a la v\u00edctima. <\/p>\n

El problema es causado por un error en el controlador de Wi-Fi P2P, que provoca que el procesamiento de una trama PDR (Provision Discovery Request) malformada pueda llevar a un estado en el que la entrada de un viejo par P2P se elimine y la informaci\u00f3n se escriba en un bloque de memoria ya liberado (use-after-free). Las versiones de wpa_supplicant desde la 1.0 hasta la 2.9, compiladas con la opci\u00f3n CONFIG_P2P, son vulnerables. <\/p>\n

La vulnerabilidad se solucionar\u00e1 en la versi\u00f3n wpa_supplicant 2.10. En las distribuciones, se ha publicado una actualizaci\u00f3n con la correcci\u00f3n para Fedora Linux. El estado de publicaci\u00f3n de actualizaciones por otras distribuciones se puede rastrear en las p\u00e1ginas: Debian, Ubuntu, RHEL, SUSE, Arch Linux. Como soluci\u00f3n temporal para bloquear la vulnerabilidad, es suficiente desactivar el soporte de P2P, especificando en la configuraci\u00f3n 'p2p_disabled=1' o ejecutando en la interfaz CLI el comando 'P2P_SET disabled 1'.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 wpa_supplicant, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043a \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 \u0432\u043e \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux, *BSD \u0438 Android, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-27803), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0430 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f 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\u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0436\u0435\u0440\u0442\u0432\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-99301","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Vulnerabilidad en wpa_supplicant que permite la ejecuci\u00f3n remota de c\u00f3digo | ProHoster","description":"En el paquete wpa_supplicant, utilizado para la conexi\u00f3n a redes inal\u00e1mbricas en muchas distribuciones de Linux, *BSD y Android, se ha detectado una vulnerabilidad (CVE-2021-27803) que podr\u00eda ser aprovechada.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 wpa_supplicant, \u043d\u0435 \u0438\u0441\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 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