{"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\/fr\/blog\/news\/uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans wpa_supplicant, ne permettant pas l'ex\u00e9cution de code \u00e0 distance","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dans le paquet wpa_supplicant, utilis\u00e9 pour \u00e9tablir des connexions sans fil dans de nombreuses distributions Linux, *BSD et Android, une vuln\u00e9rabilit\u00e9 (CVE-2021-27803) a \u00e9t\u00e9 identifi\u00e9e, qui pourrait potentiellement \u00eatre exploit\u00e9e pour ex\u00e9cuter du code malveillant lors du traitement de trames de contr\u00f4le Wi-Fi Direct (Wi-Fi P2P) sp\u00e9cialement con\u00e7ues. Pour mener l'attaque, l'attaquant doit se trouver \u00e0 port\u00e9e du r\u00e9seau sans fil pour envoyer \u00e0 la victime un ensemble de trames sp\u00e9cialement con\u00e7ues. <\/p>\n

Le probl\u00e8me est caus\u00e9 par une erreur dans le gestionnaire Wi-Fi P2P, entra\u00eenant un traitement incorrect d'une trame PDR (Provision Discovery Request), ce qui peut provoquer une situation o\u00f9 l'entr\u00e9e d'un ancien pair P2P est supprim\u00e9e et des informations sont \u00e9crites dans un bloc de m\u00e9moire d\u00e9j\u00e0 lib\u00e9r\u00e9 (use-after-free). Les versions de wpa_supplicant de 1.0 \u00e0 2.9, compil\u00e9es avec l'option CONFIG_P2P, sont vuln\u00e9rables. <\/p>\n

La vuln\u00e9rabilit\u00e9 sera corrig\u00e9e dans la version wpa_supplicant 2.10. Dans les distributions, la mise \u00e0 jour avec le correctif est publi\u00e9e pour Fedora Linux. Le statut de publication des mises \u00e0 jour par d'autres distributions peut \u00eatre suivi sur les pages : Debian, Ubuntu, RHEL, SUSE, Arch Linux. Comme solution de contournement pour bloquer la vuln\u00e9rabilit\u00e9, il suffit de d\u00e9sactiver la prise en charge de P2P en indiquant dans les param\u00e8tres \u00ab p2p_disabled=1 \u00bb ou en ex\u00e9cutant dans l'interface CLI la commande \u00ab P2P_SET disabled 1 \u00bb.
\n
Source : 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 \u043a\u043e\u0434\u0430 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0445 \u043a\u0430\u0434\u0440\u043e\u0432 Wi-Fi Direct (Wi-Fi P2P). \u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a \u0434\u043e\u043b\u0436\u0435\u043d \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u0445 \u0434\u043e\u0441\u044f\u0433\u0430\u0435\u043c\u043e\u0441\u0442\u0438 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0439 \u0441\u0435\u0442\u0438, \u0447\u0442\u043e\u0431\u044b 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sans fil dans de nombreuses distributions Linux, *BSD et Android, une vuln\u00e9rabilit\u00e9 (CVE-2021-27803) a \u00e9t\u00e9 identifi\u00e9e, qui pourrait potentiellement \u00eatre exploit\u00e9e.","canonical_url":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-wpa_supplicant-ne-isklyuchayushhaya-udalyonnoe-vypolnenie-koda","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"fr_FR","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 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