{"id":146775,"date":"2025-10-29T23:12:08","date_gmt":"2025-10-29T21:12:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-20-s-ustraneniem-3-uyazvimostej"},"modified":"2025-10-29T23:12:08","modified_gmt":"2025-10-29T21:12:08","slug":"obnovlenie-x-org-server-21-1-20-s-ustraneniem-3-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/obnovlenie-x-org-server-21-1-20-s-ustraneniem-3-uyazvimostej","title":{"rendered":"Aktualizace X.Org Server 21.1.20 s opravou 3 zranitelnost\u00ed.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byly vyd\u00e1ny opravy pro X.Org Server 21.1.19 a DDX komponentu (Device-Dependent X) xwayland 24.1.9, kter\u00fd zaji\u0161\u0165uje spu\u0161t\u011bn\u00ed X.Org Serveru pro realizaci X11 aplikac\u00ed v prost\u0159ed\u00ed zalo\u017een\u00e9m na Waylandu. V nov\u00fdch verz\u00edch byly opraveny 3 zranitelnosti, kter\u00e9 byly ohodnoceny stupn\u011bm z\u00e1va\u017enosti 7.8 z 10. Probl\u00e9my mohou b\u00fdt potenci\u00e1ln\u011b zneu\u017eity k eskalaci opr\u00e1vn\u011bn\u00ed v syst\u00e9mech, kde X-server b\u011b\u017e\u00ed s pr\u00e1vy root, a tak\u00e9 k vzd\u00e1len\u00e9mu vykon\u00e1n\u00ed k\u00f3du v konfigurac\u00edch, kde se pro p\u0159\u00edstup pou\u017e\u00edv\u00e1 p\u0159esm\u011brov\u00e1n\u00ed X11 relace pomoc\u00ed SSH.       <\/p>\n<p>Opraven\u00e9 zranitelnosti:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2025-62229 \u2014 p\u0159\u00edstup k pam\u011bti po jej\u00edm uvoln\u011bn\u00ed v k\u00f3du pro vytvo\u0159en\u00ed struktury XPresentNotify. Probl\u00e9m se projevuje v implementaci roz\u0161\u00ed\u0159en\u00ed X11 Present a vede k ponech\u00e1n\u00ed ukazatele na smazan\u00fd objekt present_notify v p\u0159\u00edpad\u011b chyby p\u0159i zpracov\u00e1n\u00ed a p\u0159id\u00e1v\u00e1n\u00ed ozn\u00e1men\u00ed po prezentaci rastrov\u00e9 mapy. Zranitelnost se projevuje od vyd\u00e1n\u00ed Xorg 1.15 (2013).\n<li class=\"l\"> CVE-2025-62230 \u2014 p\u0159\u00edstup k pam\u011bti po jej\u00edm uvoln\u011bn\u00ed p\u0159i odstra\u0148ov\u00e1n\u00ed prost\u0159edk\u016f Xkb pro klienta. Funkce XkbRemoveResourceClient() uvolnila pam\u011b\u0165 p\u0159id\u011blenou pro data XkbInterest souvisej\u00edc\u00ed s za\u0159\u00edzen\u00edm, ale ponechala s nimi spojen\u00e9 prost\u0159edky. Zranitelnost se projevuje od vyd\u00e1n\u00ed X11R6 (1994).\n<li class=\"l\"> CVE-2025-62231 \u2014 p\u0159ete\u010den\u00ed celo\u010d\u00edseln\u00e9 hodnoty v roz\u0161\u00ed\u0159en\u00ed Xkb. V struktu\u0159e XkbCompatMap byly hodnoty ulo\u017eeny jako \u201eunsigned short\u201c, ale nebyly kontrolov\u00e1ny z hlediska toho, \u017ee vstupn\u00ed hodnota m\u016f\u017ee p\u0159ekro\u010dit horn\u00ed mez tohoto typu. Zranitelnost se projevuje od vyd\u00e1n\u00ed X11R6 (1994).     <\/ul>\n<p>Na z\u00e1klad\u011b nov\u00fdch informac\u00ed byl vytvo\u0159en opravn\u00fd vyd\u00e1n\u00ed X.Org Server 21.1.20, ve kter\u00e9m byla vy\u0159e\u0161ena probl\u00e9m, kter\u00fd zp\u016fsobil p\u00e1d p\u0159i sestavov\u00e1n\u00ed s pou\u017eit\u00edm build syst\u00e9mu Meson.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64138\">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 21.1.19 \u0438 DDX-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 (Device-Dependent X) xwayland 24.1.9, \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 3 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 7.8 \u0438\u0437 10. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \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, [&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-146775","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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