{"id":39040,"date":"2019-10-31T22:27:31","date_gmt":"2019-10-31T19:27:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/udalyonno-ekspluatiruemaya-uyazvimost-v-linux-drajvere-dlya-chipov-realtek\/"},"modified":"2019-10-31T22:27:31","modified_gmt":"2019-10-31T19:27:31","slug":"udalyonno-ekspluatiruemaya-uyazvimost-v-linux-drajvere-dlya-chipov-realtek","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/udalyonno-ekspluatiruemaya-uyazvimost-v-linux-drajvere-dlya-chipov-realtek","title":{"rendered":"Kaugt\u00f6\u00f6deldav haavatavus Linuxi draiveris Realteki kiipide jaoks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Linuxi tuumasse kuuluv draiver rtlwifi<\/a><\/noindex> Realteki kiipide p\u00f5hjal t\u00f6\u00f6tavate juhtmeta adapterite jaoks tuvastatud<\/a><\/noindex> haavatavus (CVE-2019-17666<\/a><\/noindex>), mis v\u00f5ib v\u00f5imaldada koodi t\u00e4itmist tuuma kontekstis, kui saata spetsiaalselt kujundatud kaadreid.<\/p>\n

T\u00f5rge on p\u00f5hjustatud puhver\u00fclekandest P2P (Wifi-Direct) re\u017eiimi teostava koodi taga. NoA<\/a><\/noindex> (Notice of Absence) ei kontrollita \u00fchte v\u00e4\u00e4rtust, mis v\u00f5imaldab andmete l\u00f5pus kirjutamist puhvrist v\u00e4ljapoole ja m\u00f5jutada j\u00e4rgmisi tuuma struktuure.<\/p>\n

R\u00fcnnakut saab sooritada spetsiaalselt kujundatud kaadrite saatmisega s\u00fcsteemi, kus on aktiivne Realteki kiibil p\u00f5hinev v\u00f5rguga adapter, mis toetab Wi-Fi Direct<\/a><\/noindex>, mis v\u00f5imaldab kahe juhtmeta adapteri \u00fchendamist otse ilma juurdep\u00e4\u00e4supunktita. Probleemi \u00e4rakasutamiseks ei ole vajalik \u00fchendust luua r\u00fcndaja juhtmeta v\u00f5rguga, samuti ei ole vajalik kasutaja mingite toimingute sooritamine \u2014 piisab, kui r\u00fcndaja viibib juhtmeta signaali ulatuses. <\/p>\n

T\u00f6\u00f6tav eksploitprotot\u00fc\u00fcp piirdub praegu kaugt\u00f5rke kutsega, kuid haavatavus ei v\u00e4lista potentsiaali koodide t\u00e4itmiseks (praeguseks on see vaid teoreetiline eeldus, kuna koodi t\u00e4itmine on veel protot\u00fc\u00fcbi faasis, kuid probleemiga tegelev uurija on juba koos<\/a><\/noindex> t\u00f6\u00f6tamas selle loomise kallal).<\/p>\n

Probleem ilmneb alates kernelist 3.12<\/a><\/noindex> (m\u00f5nede andmete kohaselt ilmneb probleem alates kernelist 3.10<\/a><\/noindex>), mis ilmus 2013. aastal. Parandus on saadaval ainult pat\u0161<\/a><\/noindex>. Distrodes j\u00e4\u00e4b probleem siiski lahendamata.
\nHaavatavuste k\u00f5rvaldamist distribuutides saab j\u00e4lgida j\u00e4rgmistelt lehtedelt: Debian<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, RHEL<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, Arch Linuxis<\/a><\/noindex>, Fedora<\/a><\/noindex>. T\u00f5en\u00e4oliselt m\u00f5jutab see haavatavus ka puudutab<\/a><\/noindex> ja Android platvormi.<\/p>\n

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

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

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Haavatavus tuleneb puhversalvuse \u00fclevoolust, mis on seotud P2P (Wifi-Direct) re\u017eiimi rakendamise koodiga. Kaadreid NoA (Notice of Absence) anal\u00fc\u00fcsides puudub suuruse kontroll.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/udalyonno-ekspluatiruemaya-uyazvimost-v-linux-drajvere-dlya-chipov-realtek","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Linux-\u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0435 \u0434\u043b\u044f \u0447\u0438\u043f\u043e\u0432 Realtek | ProHoster","og:description":"\u0412\u043e \u0432\u0445\u043e\u0434\u044f\u0449\u0435\u043c \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0435 rtlwifi \u0434\u043b\u044f \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432 \u043d\u0430 \u0447\u0438\u043f\u0430\u0445 Realtek \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-17666), \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 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 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