{"id":117002,"date":"2024-07-06T21:43:04","date_gmt":"2024-07-06T19:43:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-darknete-poyavilas-informacziya-chto-grub-skomprometirovan"},"modified":"2024-07-06T21:43:04","modified_gmt":"2024-07-06T19:43:04","slug":"v-darknete-poyavilas-informacziya-chto-grub-skomprometirovan","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-darknete-poyavilas-informacziya-chto-grub-skomprometirovan","title":{"rendered":"V darknetu se objevily informace, \u017ee GRUB byl kompromitov\u00e1n","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"V <\/p>\n

Exploity pro zranitelnost 0day u\u017e jsou k dispozici na odpov\u00eddaj\u00edc\u00edch f\u00f3rech.<\/p>\n

21. \u010dervna se na jednom z f\u00f3r objevily informace o prodeji exploitu k nult\u00e9 denn\u00ed zranitelnosti v GRUB bootloaderu Linuxu, kter\u00e1 umo\u017e\u0148uje m\u00edstn\u00ed zv\u00fd\u0161en\u00ed opr\u00e1vn\u011bn\u00ed (LPE).<\/p>\n

Podle informac\u00ed od Dark Web Intelligence tvrdi \u00fato\u010dn\u00edk, \u017ee na\u0161el zranitelnost v GRUB, kter\u00e1 umo\u017e\u0148uje obch\u00e1zet autentiza\u010dn\u00ed mechanismy a z\u00edskat pr\u00e1va root na syst\u00e9mu.<\/p>\n

Podle zpr\u00e1vy \u00fa\u010dastn\u00edka temn\u00e9ho f\u00f3ra pod p\u0159ezd\u00edvkou \u201eCas\u201c se zranitelnost t\u00fdk\u00e1 GRUB \u2013 kritick\u00e9 sou\u010d\u00e1sti v\u011bt\u0161iny Linuxov\u00fdch syst\u00e9m\u016f, kter\u00e1 \u0159\u00edd\u00ed proces spou\u0161t\u011bn\u00ed, co\u017e umo\u017e\u0148uje \u00fato\u010dn\u00edk\u016fm instalovat skryt\u00fd a odoln\u00fd malware, jeho\u017e zji\u0161t\u011bn\u00ed a odstran\u011bn\u00ed m\u016f\u017ee b\u00fdt velmi problematick\u00e9. Exploit se prod\u00e1v\u00e1 za cenu 90 tis\u00edc dolar\u016f.<\/p>\n

Je t\u0159eba poznamenat, \u017ee GRUB se ji\u017e v minulosti stal c\u00edlem \u00fatok\u016f. Nap\u0159\u00edklad v roce 2015 byla objevena zranitelnost CVE-2015-8370, kter\u00e1 umo\u017e\u0148ovala obch\u00e1zet autentizaci stisknut\u00edm kl\u00e1vesy backspace 28kr\u00e1t na etape zad\u00e1v\u00e1n\u00ed u\u017eivatelsk\u00e9ho jm\u00e9na v GRUB. Tato zranitelnost se t\u00fdkala verz\u00ed GRUB od 1.98 do 2.02 a byla \u0161iroce pou\u017e\u00edvan\u00e1 a\u017e do vyd\u00e1n\u00ed opravy. V roce 2020 pak byla zji\u0161t\u011bna dal\u0161\u00ed zranitelnost \u2013 CVE-2020-10713, zn\u00e1m\u00e1 tak\u00e9 jako BootHole, kter\u00e1 umo\u017e\u0148ovala instalaci malwaru b\u011bhem spou\u0161t\u011bn\u00ed.<\/p>\n

Hlavn\u00ed distribuce Linuxu, jako jsou Debian, RedHat a Ubuntu, rychle vydaly doporu\u010den\u00ed a opravy pro p\u0159edchoz\u00ed zranitelnosti GRUB a pravd\u011bpodobn\u011b se tak stane i tentokr\u00e1t. Probl\u00e9m v\u0161ak zhor\u0161uje skute\u010dnost, \u017ee zranitelnost byla objevena \u00fato\u010dn\u00edky, nikoli etick\u00fdmi hackery. To znamen\u00e1, \u017ee jej\u00ed zji\u0161t\u011bn\u00ed a oprava v\u00fdzkumn\u00edky v oblasti bezpe\u010dnosti m\u016f\u017ee trvat zna\u010dn\u011b dlouho.<\/p>\n

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

\u042d\u043a\u0441\u043f\u043b\u043e\u0439\u0442 \u0434\u043b\u044f 0day-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0436\u0435 \u043f\u0440\u043e\u0434\u0430\u0451\u0442\u0441\u044f \u043d\u0430 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0444\u043e\u0440\u0443\u043c\u0430\u0445. 21 \u0438\u044e\u043d\u044f \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u0444\u043e\u0440\u0443\u043c\u043e\u0432 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e \u043f\u0440\u043e\u0434\u0430\u0436\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u043a \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043d\u0443\u043b\u0435\u0432\u043e\u0433\u043e \u0434\u043d\u044f \u0432 GRUB-\u0437\u0430\u0433\u0440\u0443\u0437\u0447\u0438\u043a\u0435 Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 (LPE). \u041f\u043e \u0434\u0430\u043d\u043d\u044b\u043c Dark Web Intelligence, \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0430\u0435\u0442, \u0447\u0442\u043e \u043d\u0430\u0448\u0451\u043b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 GRUB, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0431\u043e\u0439\u0442\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0421\u043e\u0433\u043b\u0430\u0441\u043d\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":117003,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-117002","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Na dark webu se objevily informace, \u017ee GRUB byl kompromitov\u00e1n | ProHoster","description":"Exploity pro zranitelnost 0day u\u017e 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