{"id":184024,"date":"2026-10-28T23:40:36","date_gmt":"2026-10-28T21:40:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/udalyonnaya-uyazvimost-v-servernyh-uefi-proshivkah-ekspluatiruemaya-cherez-otpravku-icmp-paketa"},"modified":"2026-10-28T23:40:41","modified_gmt":"2026-10-28T21:40:41","slug":"remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","title":{"rendered":"Udaljena ranjivost u UEFI firmware-ima poslu\u017eitelja, iskori\u0161tena slanjem ICMP paketa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U TianoCore EDK II (EFI Development Kit II), otvorenom referentnom rje\u0161enju UEFI koje se koristi na ve\u0107ini poslu\u017eiteljskih mati\u010dnih plo\u010da, otklonjena je kriti\u010dna ranjivost (CVE-2026-97631). Ranjivost se pojavljuje u PXE upravlja\u010du i mo\u017ee se iskoristiti slanjem posebno oblikovanih ICMP paketa tijekom mre\u017enog pokretanja u IPv4 ili IPv6 mre\u017eama. Napad ne zahtijeva autentifikaciju i omogu\u0107uje napada\u010du da izvr\u0161i svoj kod s privilegijama UEFI firmware-a prije nego \u0161to se kontrola prenese operativnom sustavu, \u0161to se mo\u017ee iskoristiti za zaobila\u017eenje mehanizma verificirane UEFI Secure Boot i ubacivanje zlonamjernih komponenti tijekom pokretanja.<\/p>\n

Problemi su uzrokovani prelivanjem bafera u ICMP poruka obradniku u UefiPxeBcDxe upravlja\u010du, koji se koristi za PXE pokretanje i prihva\u0107a ICMP pakete tijekom mre\u017enog pokretanja radi bilje\u017eenja mre\u017enih gre\u0161aka. Prelivanje se doga\u0111a zbog smje\u0161tanja primljenih poruka o gre\u0161ci u fiksni bafer od 504 bajta, bez provjere stvarne veli\u010dine primljenih podataka. U slu\u010daju slanja vi\u0161e od 504 bajta u ICMP paketu, neuklopljeni Tail zapisuju se izvan bafera i preklapaju se s slijede\u0107im strukturama. <\/p>\n

Napad se mo\u017ee izvesti iz globalne mre\u017ee \u2014 dovoljno je znati IP adresu \u017ertve i odabrati pravi trenutak za PXE pokretanje. Znaju\u0107i koja se to\u010dno verzija firmvera koristi na serveru<\/a> \u017ertvi, napada\u010d mo\u017ee pripremiti exploit uzimaju\u0107i u obzir pozicije struktura u memoriji specifi\u010dne verzije firmware-a i iskoristiti ranjivost za izvr\u0161avanje koda na razini DXE (Driver Execution Environment), koji se izvr\u0161ava u nultom razredu za\u0161tite. <\/p>\n

Projekt EDK II otvoren je 2004. godine od strane Intela i koristi ga svi veliki proizvo\u0111a\u010di firmware-a za poslu\u017eiteljske sustave, podatkovne centre i usluge u oblaku. Osim toga, koristi se u AMI, Insyde i Phoenix firmware-ima. Ranjivosti su tako\u0111er prisutne u firmware-u temeljenom na Mu platformi od strane Microsofta, koji predstavlja fork EDK II.<\/p>\n

Problem je otkriven od strane predstavnika kompanija Anthropic i Google, a planiran je za koordinirano javno otkrivanje u januaru 2027. godine. Me\u0111utim, informacije su morale biti objavljene ranije jer je in\u017eenjer iz kompanije AMI slu\u010dajno prekr\u0161io embargo i objavio javni pull zahtjev s ispravkom, na osnovu kojeg se mogla shvatiti su\u0161tina ranjivosti.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 TianoCore EDK II (EFI Development Kit II), \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 UEFI, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u043c\u0430\u0442\u0435\u0440\u0438\u043d\u0441\u043a\u0438\u0445 \u043f\u043b\u0430\u0442, \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-97631). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0435 PXE \u0438 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 ICMP-\u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0432 \u0441\u0435\u0442\u044f\u0445 IPv4 \u0438\u043b\u0438 IPv6. \u0410\u0442\u0430\u043a\u0430 \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184024","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\n","aioseo_head_json":{"title":"\ud83e\udd47Udaljena ranjivost u serverskim UEFI firmware-ima, koja se iskori\u0161tava slanjem ICMP paketa | ProHoster","description":"U TianoCore EDK II (EFI Development Kit II), otvorenom referentnom ukazanju UEFI koje se koristi u ve\u0107ini serverskih mati\u010dnih plo\u010da, otklonjena je kriti\u010dna ranjivost (CVE-2026-97631).","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","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\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 UEFI-\u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u0445, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u0430\u044f \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 ICMP-\u043f\u0430\u043a\u0435\u0442\u0430 | ProHoster","og:description":"\u0412 TianoCore EDK II (EFI Development Kit II), \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 UEFI, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u043c\u0430\u0442\u0435\u0440\u0438\u043d\u0441\u043a\u0438\u0445 \u043f\u043b\u0430\u0442, \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-97631).","og:url":"https:\/\/prohoster.info\/hr\/blog\/news\/remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-10-28T21:40:36+00:00","article:modified_time":"2026-10-28T21:40:41+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/184024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/comments?post=184024"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/184024\/revisions"}],"predecessor-version":[{"id":184025,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/184024\/revisions\/184025"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/media?parent=184024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/categories?post=184024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/tags?post=184024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}