{"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\/ro\/blog\/news\/15-uyazvimostej-v-usb-drajverah-postavlyaemyh-v-yadre-linux","title":{"rendered":"15 vulnerabilit\u0103\u021bi \u00een driverele USB furnizate \u00een nucleul Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/xairy\">Andrei Konovalov<\/a><\/noindex> de la compania Google  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2019\/12\/03\/4\">a publicat<\/a><\/noindex> raport de identificare a \u00eenc\u0103 15 vulnerabilit\u0103\u021bi (CVE-2019-19523 - CVE-2019-19537) \u00een driverele USB oferite \u00een nucleul Linux. Aceasta este a treia serie de probleme descoperite \u00een urma test\u0103rilor fuzzing ale stivei USB din pachet <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\/blob\/master\/docs\/linux\/external_fuzzing_usb.md\">syzkaller<\/a><\/noindex> - anterior, acest cercet\u0103tor <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47523\">este deja<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51333\">raporta<\/a><\/noindex> despre existen\u021ba a 29 de vulnerabilit\u0103\u021bi. <\/p>\n<p>De data aceasta, lista include doar vulnerabilit\u0103\u021bile cauzate de accesul la zone de memorie deja eliberate (use-after-free) sau care conduc la scurgeri de date din memoria nucleului. Problemele care pot fi utilizate pentru atacuri de refuzare a serviciului nu sunt incluse \u00een raport. Vulnerabilit\u0103\u021bile pot fi poten\u021bial exploatate prin conectarea unor dispozitive USB special preg\u0103tite la calculator. Corec\u021biile pentru toate problemele men\u021bionate \u00een raport sunt deja incluse \u00een nucleu, dar unele care nu au fost incluse \u00een raport <noindex><a rel=\"nofollow\" href=\"https:\/\/syzkaller.appspot.com\/upstream?manager=ci2-upstream-usb\">unei erori<\/a><\/noindex> r\u0103m\u00e2n \u00eenc\u0103 nerezolvate.<\/p>\n<p>Cele mai periculos vulnerabilit\u0103\u021bi de tip 'use-after-free', care pot duce la executarea codului atacatorului, au fost remediate \u00een driverele adutux, ff-memless, ieee802154, pn533, hiddev, iowarrior, mcba_usb \u0219i yurex. Sub CVE-2019-19532 au fost consolidate 14 vulnerabilit\u0103\u021bi \u00een driverele HID, cauzate de erori care permit scrierea dincolo de limita tamponului (out-of-bounds write). \u00cen driverele ttusb_dec, pcan_usb_fd \u0219i pcan_usb_pro au fost g\u0103site probleme care duc la scurgeri de date din memoria nucleului. \u00cen codul stivei USB pentru lucrul cu dispozitivele simbolice a fost identificat\u0103 o problem\u0103 (CVE-2019-19537), cauzat\u0103 de o stare de concuren\u021b\u0103 (race condition).<\/p>\n<p>De asemenea, se poate men\u021biona<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2019\/11\/22\/1\">amenin\u021b\u0103rilor legate de securitate \u00een software-ul open-source,<\/a><\/noindex> patru vulnerabilit\u0103\u021bi (CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901) \u00een driverul pentru cipurile wireless Marvell, care pot conduce la supra\u00eenc\u0103rcarea bufferului. Atacul poate fi efectuat de la distan\u021b\u0103 prin trimiterea unor cadre formate \u00eentr-un mod specific atunci c\u00e2nd se conecteaz\u0103 la un punct de acces wireless al atacatorului. Ca cea mai probabil\u0103 amenin\u021bare se semnaleaz\u0103 un refuz de serviciu de la distan\u021b\u0103 (crash-ul nucleului), dar nu este exclus\u0103 nici posibilitatea execut\u0103rii codului \u00een sistem.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Sursa: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51974\">opennet.ro<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 &#8212; 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 &#8212; \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 [&hellip;]<\/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<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u043d\u0434\u0440\u0435\u0439 \u041a\u043e\u043d\u043e\u0432\u0430\u043b\u043e\u0432 \u0438\u0437 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