{"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\/hu\/blog\/news\/remote-vulnerability-in-server-uefi-firmware-exploitable-by-sending-an-icmp-packet","title":{"rendered":"T\u00e1voli sebezhet\u0151s\u00e9g a szerverek UEFI firmware-j\u00e9ben, amelyet ICMP-csomag k\u00fcld\u00e9s\u00e9vel lehet kihaszn\u00e1lni","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A TianoCore EDK II (EFI Development Kit II) ny\u00edlt referencia-implement\u00e1ci\u00f3j\u00e1ban, amelyet a legt\u00f6bb szerver alaplapn\u00e1l alkalmaznak, egy kritikus sebezhet\u0151s\u00e9get (CVE-2026-97631) fedeztek fel. A sebezhet\u0151s\u00e9g a PXE illeszt\u0151programban tal\u00e1lhat\u00f3, \u00e9s kihaszn\u00e1lhat\u00f3 speci\u00e1lisan megform\u00e1zott ICMP-csomagok k\u00fcld\u00e9s\u00e9vel a h\u00e1l\u00f3zati ind\u00edt\u00e1s sor\u00e1n IPv4 vagy IPv6 h\u00e1l\u00f3zatokban. A t\u00e1mad\u00e1s nem ig\u00e9nyel hiteles\u00edt\u00e9st, \u00e9s lehet\u0151v\u00e9 teszi a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra, hogy k\u00f3dot hajtson v\u00e9gre UEFI firmware jogosults\u00e1gokkal a m\u0171k\u00f6d\u00e9si rendszer ir\u00e1ny\u00edt\u00e1sa el\u0151tt, amelyet fel lehet haszn\u00e1lni az UEFI Secure Boot hiteles\u00edtett ind\u00edt\u00e1si mechanizmus\u00e1nak megker\u00fcl\u00e9s\u00e9re \u00e9s rosszindulat\u00fa \u00f6sszetev\u0151k beilleszt\u00e9s\u00e9re az ind\u00edt\u00e1si folyamat sor\u00e1n.<\/p>\n

A probl\u00e9ma egy puffer t\u00falcsordul\u00e1s\u00e1b\u00f3l ad\u00f3dik az ICMP-\u00fczeneteket kezel\u0151 UefiPxeBcDxe illeszt\u0151programban, amely a PXE-ind\u00edt\u00e1shoz haszn\u00e1latos, \u00e9s ICMP-csomagokat fogad a h\u00e1l\u00f3zati ind\u00edt\u00e1s sor\u00e1n a h\u00e1l\u00f3zati hib\u00e1k r\u00f6gz\u00edt\u00e9s\u00e9re. A t\u00falcsordul\u00e1s abb\u00f3l ad\u00f3dik, hogy az \u00e9rkezett hiba\u00fczeneteket egy 504 b\u00e1jt m\u00e9ret\u0171 fix buferrbe helyezik an\u00e9lk\u00fcl, hogy ellen\u0151rizn\u00e9k az \u00e9rkezett adatok t\u00e9nyleges m\u00e9ret\u00e9t. Ha az ICMP-csomagban t\u00f6bb mint 504 b\u00e1jtot k\u00fcldenek, a t\u00falcsordul\u00e1s a puffer hat\u00e1rain t\u00falny\u00falva t\u00f6bbi strukt\u00far\u00e1ra \u00e1tl\u00e9p. <\/p>\n

A t\u00e1mad\u00e1st a glob\u00e1lis h\u00e1l\u00f3zatr\u00f3l is v\u00e9grehajthatj\u00e1k \u2014 elegend\u0151 tudni az \u00e1ldozat IP-c\u00edm\u00e9t \u00e9s k\u00e9pesnek lenni meghat\u00e1rozni a PXE-ind\u00edt\u00e1s id\u0151pontj\u00e1t. Tudva, hogy pontosan milyen firmware-t haszn\u00e1lnak a szerveren<\/a> A t\u00e1mad\u00f3 \u00edgy k\u00e9pes lehet felk\u00e9sz\u00edteni egy exploitot a firmware specifikus mem\u00f3ria strukt\u00far\u00e1inak helyzet\u00e9re alapozva, \u00e9s kihaszn\u00e1lni a sebezhet\u0151s\u00e9get k\u00f3d v\u00e9grehajt\u00e1s\u00e1ra a DXE (Driver Execution Environment) szinten, amely a null\u00e1s v\u00e9delmi gy\u0171r\u0171ben fut. <\/p>\n

Az EDK II projektet az Intel ind\u00edtotta 2004-ben, \u00e9s a nagy gy\u00e1rt\u00f3k, adatk\u00f6zpontok \u00e9s felh\u0151szolg\u00e1ltat\u00f3k haszn\u00e1lj\u00e1k. T\u00f6bbek k\u00f6z\u00f6tt az AMI, Insyde \u00e9s Phoenix firmware-ekben is alkalmazz\u00e1k. A sebezhet\u0151s\u00e9gek jelen vannak a Microsoft Mu platformj\u00e1ra alapozott firmware-ekben is, amely az EDK II forkja.<\/p>\n

A probl\u00e9m\u00e1t az Anthropic \u00e9s a Google k\u00e9pvisel\u0151i azonos\u00edtott\u00e1k, \u00e9s 2027 janu\u00e1rj\u00e1ra terveztek egy \u00f6sszehangolt nyilv\u00e1nos bejelent\u00e9st. Azonban az inform\u00e1ci\u00f3t kor\u00e1bban kellett nyilv\u00e1noss\u00e1gra hozni, mivel egy AMI m\u00e9rn\u00f6k v\u00e9letlen\u00fcl megs\u00e9rtette a titoktart\u00e1st, \u00e9s k\u00f6zz\u00e9tett egy nyilv\u00e1nos pull k\u00e9rd\u00e9st a jav\u00edt\u00e1ssal, amely alapj\u00e1n \u00e9rthet\u0151 volt a s\u00e9r\u00fcl\u00e9kenys\u00e9g l\u00e9nyege.
\n
Forr\u00e1s: 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\udd47T\u00e1voli s\u00e9r\u00fcl\u00e9kenys\u00e9g a szerverek UEFI firmware-j\u00e9ben, kihaszn\u00e1lva ICMP csomag k\u00fcld\u00e9s\u00e9vel | ProHoster","description":"A TianoCore EDK II (EFI Development Kit II), az UEFI ny\u00edlt referencia-implement\u00e1ci\u00f3ja, amelyet a legt\u00f6bb szerver alaplap haszn\u00e1l, jav\u00edtott egy kritikus hib\u00e1t (CVE-2026-97631).","canonical_url":"https:\/\/prohoster.info\/hu\/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":"hu_HU","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\/hu\/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\/hu\/wp-json\/wp\/v2\/posts\/184024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=184024"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/184024\/revisions"}],"predecessor-version":[{"id":184025,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/184024\/revisions\/184025"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=184024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=184024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=184024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}