{"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\/sl\/blog\/news\/remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","title":{"rendered":"Udaljena ranjivost u servernim UEFI firmware-ima, eksploatisana slanjem ICMP paketa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u0412 TianoCore EDK II (EFI Development Kit II), odprti referen\u010dni okvir UEFI, ki se uporablja v ve\u010dini stre\u017eni\u0161kih mati\u010dnih plo\u0161\u010d, je bila odpravljena kriti\u010dna ranljivost (CVE-2026-97631). Ranljivost je prisotna v PXE gonilniku in je mogo\u010de izkoristiti z po\u0161iljanjem posebej oblikovanih ICMP paketov med omre\u017enim nalaganjem v IPv4 ali IPv6 omre\u017ejih. Napad ne zahteva avtentikacije in napadalcu omogo\u010da izvajanje svojega kode z privilegiji UEFI vdelane programske opreme v fazi pred prenosom nadzora operacijskemu sistemu, kar lahko uporabimo za obhod mehanizma preverjanja nalaganja UEFI Secure Boot in namestitev zlonamernih komponent v fazi zagona.<\/p>\n

Te\u017eava je povzro\u010dena s prenapolnjenjem pomnilnika v obdelovalcu ICMP sporo\u010dil v gonilniku UefiPxeBcDxe, ki se uporablja za PXE nalaganje in sprejema ICMP pakete med omre\u017enim nalaganjem za bele\u017eenje omre\u017enih napak. Prenapolnitev se zgodi, ker prejeta sporo\u010dila o napakah postavimo v fiksno pomnilni\u0161ko obmo\u010dje, ki meri 504 bajte, brez preverjanja dejanske velikosti prejetih podatkov. V primeru, da je v ICMP paketu poslano ve\u010d kot 504 bajtov, se prese\u017eek zapi\u0161e izven obmo\u010dja pomnilnika in vpliva na sosednje strukture. <\/p>\n

Napad lahko izvedemo iz globalne mre\u017ee \u2014 dovolj je poznati IP-naslov \u017ertve in znati dolo\u010diti trenutek PXE-zagon. Ko vemo, katera natan\u010dna programska oprema se uporablja na stre\u017enikom<\/a> \u017ertvi, lahko napadalec pripravi izkori\u0161\u010danje ob upo\u0161tevanju postavitve struktur v pomnilniku specifi\u010dne razli\u010dice programske opreme in izkoristi ranljivost za izvajanje kode na ravni DXE (Driver Execution Environment), ki se izvaja v ni\u010delni za\u0161\u010ditni plasti. <\/p>\n

Projekt EDK II je bil odprt leta 2004 s strani podjetja Intel in ga uporabljajo vsi veliki proizvajalci programske opreme za stre\u017eni\u0161ke sisteme, podatkovne centre in obla\u010dne ponudnike. Med drugim se uporablja v programski opremi AMI, Insyde in Phoenix. Ranljivosti so prisotne tudi v programski opremi, ki temelji na Mu platformi podjetja Microsoft, ki predstavlja fork EDK II.<\/p>\n

Te\u017eava so odkrili predstavniki podjetij Anthropic in Google, na\u010drtovana pa je bila usklajena javna objava januarja 2027. A informacije je bilo treba razkriti prej, saj je in\u017eenir podjetja AMI po pomoti kr\u0161il embargo in objavil javni pull request s popravkom, na podlagi katerega je bilo mogo\u010de razumeti bistvo ranljivosti.
\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\udd47Oddaljena ranljivost v stre\u017enih UEFI mikroprogramih, ki se izkori\u0161\u010da prek po\u0161iljanja ICMP paketov | ProHoster","description":"V TianoCore EDK II (EFI Development Kit II), odprtem referen\u010dnem izvle\u010dku UEFI, ki se uporablja na ve\u010dini stre\u017enih mati\u010dnih plo\u0161\u010d, je bila odpravljena kriti\u010dna ranljivost (CVE-2026-97631).","canonical_url":"https:\/\/prohoster.info\/sl\/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":"sl_SI","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\/sl\/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\/sl\/wp-json\/wp\/v2\/posts\/184024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/comments?post=184024"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/posts\/184024\/revisions"}],"predecessor-version":[{"id":184025,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/posts\/184024\/revisions\/184025"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/media?parent=184024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/categories?post=184024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sl\/wp-json\/wp\/v2\/tags?post=184024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}