{"id":114657,"date":"2024-03-30T00:25:55","date_gmt":"2024-03-29T22:25:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor"},"modified":"2024-03-30T00:25:55","modified_gmt":"2024-03-29T22:25:55","slug":"v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","title":{"rendered":"Une porte d\u00e9rob\u00e9e a \u00e9t\u00e9 trouv\u00e9e dans le code xz des versions 5.6.0 et 5.6.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Le d\u00e9veloppeur de Debian et chercheur en s\u00e9curit\u00e9 informatique, Andres Freund, a signal\u00e9 la d\u00e9couverte d'une probable porte d\u00e9rob\u00e9e dans le code source des versions 5.6.0 et 5.6.1 de xz.<\/p>\n<p> <noindex><noindex><\/p>\n<p>La porte d\u00e9rob\u00e9e est <a rel=\"nofollow\" href=\"https:\/\/salsa.debian.org\/debian\/xz-utils\/-\/blob\/debian\/unstable\/m4\/build-to-host.m4?ref_type=heads#L63\">une ligne dans l'un des scripts m4<\/a>, qui ajoute du code malveillant obfusqu\u00e9 \u00e0 la fin du script configure. Ce code modifie ensuite l'un des Makefile g\u00e9n\u00e9r\u00e9s par le projet, ce qui conduit finalement \u00e0 l'inclusion du code malveillant (d\u00e9guis\u00e9 en archive de test bad-3-corrupt_lzma2.xz) dans le fichier binaire liblzma.<\/p>\n<p><\/noindex><\/noindex> <\/p>\n<p>La particularit\u00e9 de cet incident est que le code malveillant est contenu <em>uniquement<\/em> dans les archives tar distribu\u00e9es avec le code source et n'est pas pr\u00e9sent dans le d\u00e9p\u00f4t git du projet.<\/p>\n<p>Il est rapport\u00e9 que la personne au nom de laquelle le code malveillant a \u00e9t\u00e9 ajout\u00e9 au d\u00e9p\u00f4t du projet est soit directement impliqu\u00e9e dans les \u00e9v\u00e9nements, soit victime d'une grave compromission de ses comptes personnels (mais le chercheur penche pour la premi\u00e8re option, car cette personne a particip\u00e9 personnellement \u00e0 plusieurs discussions concernant les modifications malveillantes).<\/p>\n<p>Dans son rapport, le chercheur note que l'objectif final de la porte d\u00e9rob\u00e9e semble \u00eatre l'injection de code dans le processus sshd et la substitution du code de v\u00e9rification des cl\u00e9s RSA, et propose plusieurs moyens de v\u00e9rifier indirectement si le code malveillant s'ex\u00e9cute actuellement sur votre syst\u00e8me.<\/p>\n<p> <noindex><\/p>\n<p>Selon un article de presse <a rel=\"nofollow\" href=\"https:\/\/news.opensuse.org\/2024\/03\/29\/xz-backdoor\/\">du projet openSUSE<\/a>, en raison de la complexit\u00e9 du code du backdoor et du m\u00e9canisme suppos\u00e9 de son exploitation, il est difficile d'\u00e9tablir si et au moins une fois il a \u00ab fonctionn\u00e9 \u00bb sur cette machine. Il est recommand\u00e9 de proc\u00e9der \u00e0 une r\u00e9installation compl\u00e8te du syst\u00e8me d'exploitation tout en r\u00e9initialisant toutes les cl\u00e9s pertinentes sur toutes les machines qui ont \u00e9t\u00e9 en contact avec les versions infect\u00e9es de xz au moins une fois.<\/p>\n<p><\/noindex><\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/17567724\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian \u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0432 \u0441\u0444\u0435\u0440\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 Andres Freund \u0441\u043e\u043e\u0431\u0449\u0430\u0435\u0442 \u043e\u0431 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u0432\u0435\u0440\u043e\u044f\u0442\u043d\u043e\u0433\u043e \u0431\u044d\u043a\u0434\u043e\u0440\u0430 \u0432 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u043c \u043a\u043e\u0434\u0435 xz \u0432\u0435\u0440\u0441\u0438\u0439 5.6.0 \u0438 5.6.1. \u0411\u044d\u043a\u0434\u043e\u0440 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0441\u0442\u0440\u043e\u0447\u043a\u0443 \u0432 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 m4-\u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u043e\u0431\u0444\u0443\u0441\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u0439 \u043a\u043e\u0434 \u0432 \u043a\u043e\u043d\u0435\u0446 \u0441\u043a\u0440\u0438\u043f\u0442\u0430 configure. \u042d\u0442\u043e\u0442 \u043a\u043e\u0434 \u0437\u0430\u0442\u0435\u043c \u043c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u0435\u0442 \u043e\u0434\u0438\u043d \u0438\u0437 \u0441\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 Makefile \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u0447\u0442\u043e \u0432 \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u043c \u0438\u0442\u043e\u0433\u0435 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a [&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-114657","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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La porte d\u00e9rob\u00e9e repr\u00e9sente.","canonical_url":"https:\/\/prohoster.info\/fr\/blog\/news\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"fr_FR","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\u0412 \u043a\u043e\u0434\u0435 xz \u0432\u0435\u0440\u0441\u0438\u0439 5.6.0 \u0438 5.6.1 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d \u0431\u044d\u043a\u0434\u043e\u0440 | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian \u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0432 \u0441\u0444\u0435\u0440\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 Andres Freund \u0441\u043e\u043e\u0431\u0449\u0430\u0435\u0442 \u043e\u0431 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u0432\u0435\u0440\u043e\u044f\u0442\u043d\u043e\u0433\u043e \u0431\u044d\u043a\u0434\u043e\u0440\u0430 \u0432 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u043c \u043a\u043e\u0434\u0435 xz \u0432\u0435\u0440\u0441\u0438\u0439 5.6.0 \u0438 5.6.1. \u0411\u044d\u043a\u0434\u043e\u0440 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442.","og:url":"https:\/\/prohoster.info\/fr\/blog\/news\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","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":"2024-03-29T22:25:55+00:00","article:modified_time":"2024-03-29T22:25:55+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts\/114657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/comments?post=114657"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts\/114657\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/media?parent=114657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/categories?post=114657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/tags?post=114657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}