{"id":112965,"date":"2024-01-17T23:28:01","date_gmt":"2024-01-17T21:28:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki"},"modified":"2024-01-17T23:28:01","modified_gmt":"2024-01-17T21:28:01","slug":"pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki","title":{"rendered":"PixieFAIL \u2014 s\u00e5rbarheder i netv\u00e6rksstakken af UEFI-firmware, der anvendes til PXE-boot","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>I UEFI-firmware baseret p\u00e5 den \u00e5bne platform TianoCore EDK2, der normalt anvendes p\u00e5 serversystemer, er der identificeret 9 s\u00e5rbarheder, der har f\u00e5et det samlede kodenavn PixieFAIL. S\u00e5rbarhederne findes i netv\u00e6rksstakken i firmware, der anvendes til at organisere netv\u00e6rksboot (PXE). De mest alvorlige s\u00e5rbarheder tillader en uautentificeret angriber at udf\u00f8re sin kode eksternt p\u00e5 firmware-niveau p\u00e5 systemer, der tillader PXE-boot ved hj\u00e6lp af IPv6-netv\u00e6rk.     <\/p>\n<p>Mindre farlige problemer f\u00f8rer til nedetid (blokering af boot), datal\u00e6kage, DNS-cache forgiftning og opfangning af TCP-sessioner. St\u00f8rstedelen af s\u00e5rbarhederne kan udnyttes fra det lokale netv\u00e6rk, men enkelte s\u00e5rbarheder tillader ogs\u00e5 angreb fra et eksternt netv\u00e6rk. Et typisk angrebsscenario involverer overv\u00e5gning af trafikken i det lokale netv\u00e6rk og sending af s\u00e6rligt designede pakker ved registrering af aktiviteter relateret til systemboot via PXE. Adgang til <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2874\">server<\/a> boot eller DHCP-server er ikke n\u00f8dvendig. For demonstration af angrebsteknikken er der offentliggjort prototyper af exploits.       <\/p>\n<p>UEFI-firmware baseret p\u00e5 TianoCore EDK2 anvendes af mange store virksomheder, cloududbydere, datacentre og beregningsklynger. Is\u00e6r den s\u00e5rbare modul NetworkPkg med implementering af PXE-boot anvendes i firmware udviklet af virksomheder som ARM, Insyde Software (Insyde H20 UEFI BIOS), American Megatrends (AMI Aptio OpenEdition), Phoenix Technologies (SecureCore), Intel, Dell og Microsoft (Project Mu). Det blev antaget, at s\u00e5rbarhederne ogs\u00e5 p\u00e5virker ChromeOS-platformen, hvis repository har en EDK2-pakke, men Google har erkl\u00e6ret, at denne pakke ikke anvendes i firmware til Chromebook-enheder, og at ChromeOS-platformen ikke er p\u00e5virket af problemet.        <\/p>\n<p>Identificerede s\u00e5rbarheder:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-45230 \u2014 buffer overflow in the DHCPv6 client code, exploited through the transmission of an overly long identifier. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3612\">server<\/a> (Server ID-option).\n<li class=\"l\"> CVE-2023-45234 \u2014 buffer overflow when processing options with DNS server parameters transmitted in a message announcing the availability of a DHCPv6 server.\n<li class=\"l\"> CVE-2023-45235 \u2014 buffer overflow when processing the Server ID option in messages announcing a DHCPv6 proxy server.\n<li class=\"l\"> CVE-2023-45229 \u2014 integer underflow occurring when processing IA_NA\/IA_TA options in DHCPv6 messages announcing a DHCP server.\n<li class=\"l\"> CVE-2023-45231 \u2014 data leakage from outside the buffer when processing ND Redirect (Neighbor Discovery) messages with truncated option values.\n<li class=\"l\"> CVE-2023-45232 \u2014 infinite loop when parsing unknown options in the Destination Options header.\n<li class=\"l\"> CVE-2023-45233 \u2014 infinite loop when parsing the PadN option in the packet header.\n<li class=\"l\"> CVE-2023-45236 \u2014 use of predictable TCP initial sequence numbers allowing for TCP connection hijacking.\n<li class=\"l\"> CVE-2023-45237 \u2014 use of an unreliable pseudorandom number generator producing predictable values.  <\/ul>\n<p>Informationer om s\u00e5rbarhederne blev sendt til CERT\/CC den 3. august 2023, og offentligg\u00f8relsesdatoen var planlagt til den 2. november. P\u00e5 grund af behovet for en koordineret udgivelse af rettelser, der d\u00e6kker mange producenter, blev offentligg\u00f8relsesdatoen f\u00f8rst flyttet til den 1. december, og derefter til den 12. december og 19. december 2023, men endelig blev den offentliggjort den 16. januar 2024. Microsoft bad om at uds\u00e6tte offentligg\u00f8relsen indtil maj.<br \/>\n<br \/>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60449\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 UEFI-\u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b TianoCore EDK2, \u043e\u0431\u044b\u0447\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 9 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0438\u0445 \u0441\u043e\u0431\u0438\u0440\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f PixieFAIL. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0442 \u0432 \u0441\u0435\u0442\u0435\u0432\u043e\u043c \u0441\u0442\u0435\u043a\u0435 \u043f\u0440\u043e\u0448\u0438\u0432\u043e\u043a, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 (PXE). \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u043d\u0435\u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0438\u0445 PXE-\u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0441\u0435\u0442\u0438 IPv6. [&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-112965","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 UEFI-\u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b TianoCore EDK2, \u043e\u0431\u044b\u0447\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 9 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0438\u0445 \u0441\u043e\u0431\u0438\u0440\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f PixieFAIL.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/da\/blog\/news\/pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"da_DK\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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 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PixieFAIL.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","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\udd47PixieFAIL \u2014 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u0441\u0435\u0442\u0435\u0432\u043e\u043c \u0441\u0442\u0435\u043a\u0435 \u043f\u0440\u043e\u0448\u0438\u0432\u043e\u043a UEFI, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f PXE-\u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 | ProHoster","og:description":"\u0412 UEFI-\u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b TianoCore EDK2, \u043e\u0431\u044b\u0447\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 9 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0438\u0445 \u0441\u043e\u0431\u0438\u0440\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f PixieFAIL.","og:url":"https:\/\/prohoster.info\/da\/blog\/news\/pixiefail-uyazvimosti-v-setevom-steke-proshivok-uefi-primenyaemom-dlya-pxe-zagruzki","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":"2024-01-17T21:28:01+00:00","article:modified_time":"2024-01-17T21:28:01+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"112965","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 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