{"id":111085,"date":"2023-10-25T09:10:21","date_gmt":"2023-10-25T07:10:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-9-i-xwayland-23-2-2-s-ustraneniem-uyazvimostej"},"modified":"2023-10-25T09:10:21","modified_gmt":"2023-10-25T07:10:21","slug":"obnovlenie-x-org-server-21-1-9-i-xwayland-23-2-2-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/obnovlenie-x-org-server-21-1-9-i-xwayland-23-2-2-s-ustraneniem-uyazvimostej","title":{"rendered":"Mise \u00e0 jour de X.Org Server 21.1.9 et xwayland 23.2.2 avec correction de vuln\u00e9rabilit\u00e9s","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Des mises \u00e0 jour correctives pour X.Org Server 21.1.9 et le composant DDX (Device-Dependent X) xwayland 22.2.2, qui permet le lancement de X.Org Server pour ex\u00e9cuter des applications X11 dans des environnements bas\u00e9s sur Wayland, ont \u00e9t\u00e9 publi\u00e9es. Les nouvelles versions corrigent des vuln\u00e9rabilit\u00e9s qui pourraient potentiellement \u00eatre exploit\u00e9es pour \u00e9lever des privil\u00e8ges dans des syst\u00e8mes o\u00f9 le serveur X s'ex\u00e9cute avec des droits root, ainsi que pour une ex\u00e9cution de code \u00e0 distance dans des configurations o\u00f9 l'acc\u00e8s utilise le redirection de session X11 via SSH.       <\/p>\n<p>Probl\u00e8mes identifi\u00e9s :  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-5367 \u2014 d\u00e9bordement de tampon dans les fonctions XIChangeDeviceProperty et RRChangeOutputProperty, pouvant \u00eatre exploit\u00e9 par l'ajout d'\u00e9l\u00e9ments suppl\u00e9mentaires \u00e0 la propri\u00e9t\u00e9 d'un dispositif d'entr\u00e9e ou \u00e0 la propri\u00e9t\u00e9 randr. La vuln\u00e9rabilit\u00e9 appara\u00eet \u00e0 partir de la version xorg-server 1.4.0 (2007) et est caus\u00e9e par un calcul incorrect du d\u00e9calage lors de l'ajout d'\u00e9l\u00e9ments suppl\u00e9mentaires aux propri\u00e9t\u00e9s existantes, ce qui entra\u00eene l'ajout d'\u00e9l\u00e9ments avec un d\u00e9calage erron\u00e9, conduisant \u00e0 une \u00e9criture en dehors de la zone m\u00e9moire allou\u00e9e. Par exemple, en ajoutant 3 \u00e9l\u00e9ments \u00e0 5 \u00e9l\u00e9ments existants, de la m\u00e9moire sera allou\u00e9e pour un tableau de 8 \u00e9l\u00e9ments, mais les \u00e9l\u00e9ments ant\u00e9rieurs seront conserv\u00e9s dans le nouveau tableau \u00e0 partir de l'index 5, et non 3, ce qui conduira \u00e0 l'\u00e9criture des deux derniers \u00e9l\u00e9ments hors des limites du tampon.\n<li class=\"l\"> CVE-2023-5380 \u2014 acc\u00e8s \u00e0 la m\u00e9moire apr\u00e8s sa lib\u00e9ration (use-after-free) dans la fonction DestroyWindow. Le probl\u00e8me peut \u00eatre exploit\u00e9 par le d\u00e9placement d'un pointeur entre des \u00e9crans dans des configurations multi-\u00e9crans en mode zaphod, o\u00f9 chaque moniteur a son propre \u00e9cran, et par l'appel de la fonction de fermeture de la fen\u00eatre client. La vuln\u00e9rabilit\u00e9 appara\u00eet \u00e0 partir de la version xorg-server 1.7.0 (2009) et est caus\u00e9e par le fait qu'apr\u00e8s la fermeture d'une fen\u00eatre et la lib\u00e9ration de la m\u00e9moire qui lui est associ\u00e9e, un pointeur actif vers l'ancienne fen\u00eatre reste dans la structure assurant la liaison \u00e0 l'\u00e9cran. Xwayland n'est pas concern\u00e9 par cette vuln\u00e9rabilit\u00e9.\n<li class=\"l\"> CVE-2023-5574 \u2014 acc\u00e8s \u00e0 la m\u00e9moire apr\u00e8s sa lib\u00e9ration (use-after-free) dans la fonction DamageDestroy. La vuln\u00e9rabilit\u00e9 peut \u00eatre exploit\u00e9e dans <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/dts-newyork\/\"   title=\"le serveur\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2753\">le serveur<\/a> Xvfb pendant le nettoyage de la structure ScreenRec lors de l'arr\u00eat du serveur ou de la d\u00e9connexion du dernier client. Comme la pr\u00e9c\u00e9dente vuln\u00e9rabilit\u00e9, le probl\u00e8me ne se manifeste que dans les configurations multi-\u00e9crans en mode Zaphod. La vuln\u00e9rabilit\u00e9 est pr\u00e9sente depuis la version xorg-server-1.13.0 (2012) et reste non corrig\u00e9e (correction uniquement sous forme de patch).  <\/ul>\n<p>En plus de corriger les vuln\u00e9rabilit\u00e9s dans xwayland 23.2.2, le passage de la biblioth\u00e8que libbsd-overlay \u00e0 libbsd a \u00e9t\u00e9 effectu\u00e9 et la connexion automatique \u00e0 l'interface RemoteDesktop XDG Desktop Portal pour d\u00e9terminer le socket utilis\u00e9 pour envoyer les \u00e9v\u00e9nements XTest a \u00e9t\u00e9 interrompue. L'auto-connexion posait des probl\u00e8mes lors du d\u00e9marrage d'Xwayland dans un serveur composite imbriqu\u00e9, donc dans la nouvelle version, il est n\u00e9cessaire de sp\u00e9cifier explicitement l'option \u00ab -enable-ei-portal \u00bb pour se connecter au portail. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/dts-shicago\/\"   title=\"serveur\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2929\">serveur<\/a> les \u00e9v\u00e9nements XTest. La connexion automatique posait des probl\u00e8mes lors du d\u00e9marrage de Xwayland dans un serveur composite imbriqu\u00e9, c'est pourquoi dans la nouvelle version, il est n\u00e9cessaire de sp\u00e9cifier explicitement l'option \u00ab -enable-ei-portal \u00bb pour se connecter au portail.<br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59991\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 X.Org Server 21.1.9 \u0438 DDX-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 (Device-Dependent X) xwayland 22.2.2, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043f\u0443\u0441\u043a X.Org Server \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f X11-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0432 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 Wayland. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 X-\u0441\u0435\u0440\u0432\u0435\u0440 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445, [&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-111085","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 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