{"id":53560,"date":"2019-12-04T00:00:00","date_gmt":"2019-12-03T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/15-uyazvimostej-v-usb-drajverah-postavlyaemyh-v-yadre-linux"},"modified":"2020-02-18T14:01:28","modified_gmt":"2020-02-18T11:01:28","slug":"15-uyazvimostej-v-usb-drajverah-postavlyaemyh-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/15-uyazvimostej-v-usb-drajverah-postavlyaemyh-v-yadre-linux","title":{"rendered":"15 zranitelnost\u00ed v USB ovlada\u010d\u00edch dod\u00e1van\u00fdch v j\u00e1d\u0159e Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Andrej Konovalov<\/a><\/noindex> z firmy Google vydal<\/a><\/noindex> Zpr\u00e1va o odhalen\u00ed dal\u0161\u00edch 15 zranitelnost\u00ed (CVE-2019-19523 \u2014 CVE-2019-19537) ve USB ovlada\u010d\u00edch nab\u00edzen\u00fdch v j\u00e1dru Linuxu. Toto je t\u0159et\u00ed v\u00e1rka probl\u00e9m\u016f nalezen\u00fdch p\u0159i fuzzingov\u00e9m testov\u00e1n\u00ed USB z\u00e1sobn\u00edku v bal\u00ed\u010dku syzkaller<\/a><\/noindex> \u2014 d\u0159\u00edve tento v\u00fdzkumn\u00edk ji\u017e<\/a><\/noindex> hl\u00e1sil<\/a><\/noindex> o p\u0159\u00edtomnosti 29 zranitelnost\u00ed. <\/p>\n

Tentokr\u00e1t je v seznamu zahrnuta pouze zranitelnost zp\u016fsoben\u00e1 p\u0159\u00edstupem k ji\u017e uvoln\u011bn\u00fdm oblastem pam\u011bti (use-after-free) nebo vedouc\u00ed k \u00faniku dat z pam\u011bti j\u00e1dra. Probl\u00e9my, kter\u00e9 mohou b\u00fdt vyu\u017eity k odm\u00edtnut\u00ed slu\u017eby, do zpr\u00e1vy nebyly zahrnuty. Zranitelnosti mohou b\u00fdt potenci\u00e1ln\u011b zneu\u017eity p\u0159i p\u0159ipojen\u00ed speci\u00e1ln\u011b p\u0159ipraven\u00fdch USB za\u0159\u00edzen\u00ed k po\u010d\u00edta\u010di. Opravy pro v\u0161echny uveden\u00e9 probl\u00e9my ve zpr\u00e1v\u011b ji\u017e byly za\u010dlen\u011bny do j\u00e1dra, ale n\u011bkter\u00e9 neuveden\u00e9 v zpr\u00e1v\u011b chyb\u011b<\/a><\/noindex> zat\u00edm z\u016fst\u00e1vaj\u00ed neopraveny.<\/p>\n

Nejnebezpe\u010dn\u011bj\u0161\u00ed zranitelnosti typu \u201euse-after-free\u201c, kter\u00e9 mohou v\u00e9st k proveden\u00ed k\u00f3du \u00fato\u010dn\u00edka, byly odstran\u011bny v ovlada\u010d\u00edch adutux, ff-memless, ieee802154, pn533, hiddev, iowarrior, mcba_usb a yurex. Pod CVE-2019-19532 bylo nav\u00edc zm\u00edn\u011bno 14 zranitelnost\u00ed v HID ovlada\u010d\u00edch, zp\u016fsoben\u00fdch chybami, kter\u00e9 umo\u017e\u0148uj\u00ed z\u00e1pis mimo hranice bufferu (out-of-bounds write). V ovlada\u010d\u00edch ttusb_dec, pcan_usb_fd a pcan_usb_pro byly nalezeny probl\u00e9my vedouc\u00ed k \u00faniku dat z pam\u011bti j\u00e1dra. V k\u00f3du USB z\u00e1sobn\u00edku pro pr\u00e1ci se znakov\u00fdmi za\u0159\u00edzen\u00edmi byla objevena chyba (CVE-2019-19537), zp\u016fsoben\u00e1 z\u00e1vodem (race condition).<\/p>\n

Tak\u00e9 stoj\u00ed za zm\u00ednku
\nodhalen\u00ed<\/a><\/noindex> \u010dty\u0159 zranitelnost\u00ed (CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901) v ovlada\u010di pro bezdr\u00e1tov\u00e9 \u010dipy Marvell, kter\u00e9 mohou v\u00e9st k p\u0159ete\u010den\u00ed bufferu. \u00datok m\u016f\u017ee b\u00fdt proveden vzd\u00e1len\u011b prost\u0159ednictv\u00edm zas\u00edl\u00e1n\u00ed specificky form\u00e1tovan\u00fdch r\u00e1mc\u016f p\u0159i p\u0159ipojen\u00ed k bezdr\u00e1tov\u00e9mu p\u0159\u00edstupov\u00e9mu bodu \u00fato\u010dn\u00edka. Jako nejpravd\u011bpodobn\u011bj\u0161\u00ed hrozba je ozna\u010dena vzd\u00e1len\u00e1 odm\u00edtnut\u00ed slu\u017eby (p\u00e1d j\u00e1dra), ale nevylu\u010duje se ani mo\u017enost proveden\u00ed k\u00f3du v syst\u00e9mu.<\/p>\n

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

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

\u0410\u043d\u0434\u0440\u0435\u0439 \u041a\u043e\u043d\u043e\u0432\u0430\u043b\u043e\u0432 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043e\u0442\u0447\u0451\u0442 \u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0438 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u044b\u0445 15 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 (CVE-2019-19523 — CVE-2019-19537) \u0432 USB-\u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430\u0445, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c\u044b\u0445 \u0432 \u044f\u0434\u0440\u0435 Linux. \u042d\u0442\u043e \u0442\u0440\u0435\u0442\u044c\u044f \u043f\u043e\u0440\u0446\u0438\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c, \u043d\u0430\u0439\u0434\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u0438 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0438 fuzzing-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f USB-\u0441\u0442\u0435\u043a\u0430 \u0432 \u043f\u0430\u043a\u0435\u0442\u0435 syzkaller — \u0440\u0430\u043d\u0435\u0435 \u0434\u0430\u043d\u043d\u044b\u0439 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0443\u0436\u0435 \u0441\u043e\u043e\u0431\u0449\u0430\u043b \u043e \u043d\u0430\u043b\u0438\u0447\u0438\u0438 29 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u041d\u0430 \u044d\u0442\u043e\u0442 \u0440\u0430\u0437 \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435\u043c \u043a \u0443\u0436\u0435 […]<\/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-53560","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\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\udd4715 zranitelnost\u00ed v USB ovlada\u010d\u00edch dod\u00e1van\u00fdch v j\u00e1d\u0159e Linux | ProHoster","description":"Andrej Konovalov z firmy Google","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/15-uyazvimostej-v-usb-drajverah-postavlyaemyh-v-yadre-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | 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