{"id":137738,"date":"2025-06-21T11:12:23","date_gmt":"2025-06-21T09:12:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-18-s-ustraneniem-6-uyazvimostej"},"modified":"2025-06-21T11:12:23","modified_gmt":"2025-06-21T09:12:23","slug":"obnovlenie-x-org-server-21-1-18-s-ustraneniem-6-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/obnovlenie-x-org-server-21-1-18-s-ustraneniem-6-uyazvimostej","title":{"rendered":"Aktualizace X.Org Server 21.1.18 odstranila 6 zranitelnost\u00ed","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byly zve\u0159ejn\u011bny opravy pro X.Org Server 21.1.17 a DDX komponentu (Device-Dependent X) xwayland 24.1.7, kter\u00e1 umo\u017e\u0148uje spu\u0161t\u011bn\u00ed X.Org Serveru pro organizaci b\u011bhu aplikac\u00ed X11 v prost\u0159ed\u00edch zalo\u017een\u00fdch na Waylandu. V nov\u00e9 verzi X.Org Server bylo odstran\u011bno 6 zranitelnost\u00ed. Tyto probl\u00e9my mohou b\u00fdt potenci\u00e1ln\u011b zneu\u017eity ke zv\u00fd\u0161en\u00ed opr\u00e1vn\u011bn\u00ed v syst\u00e9mech, kde X-server b\u011b\u017e\u00ed s pr\u00e1vy root, a tak\u00e9 pro vzd\u00e1len\u00e9 vykon\u00e1v\u00e1n\u00ed k\u00f3du v konfigurac\u00edch, kde je p\u0159\u00edstup zaji\u0161t\u011bn p\u0159esm\u011brov\u00e1n\u00edm sezen\u00ed X11 pomoc\u00ed SSH.     <\/p>\n<p>Zji\u0161t\u011bn\u00e9 zranitelnosti:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2025-49176 \u2014 p\u0159ete\u010den\u00ed cel\u00e9ho \u010d\u00edsla vedouc\u00ed k po\u0161kozen\u00ed pam\u011bti v implementaci roz\u0161\u00ed\u0159en\u00ed Big Requests, kter\u00e9 umo\u017e\u0148uje vys\u00edlat po\u017eadavky p\u0159esahuj\u00edc\u00ed 64 kilobajt\u016f. Zranitelnost se projevuje od vyd\u00e1n\u00ed X11R6.0 (1994).\n<li class=\"l\"> CVE-2025-49179 \u2014 p\u0159ete\u010den\u00ed cel\u00e9ho \u010d\u00edsla vedouc\u00ed k po\u0161kozen\u00ed pam\u011bti v implementaci roz\u0161\u00ed\u0159en\u00ed X Record, k n\u011bmu\u017e doch\u00e1z\u00ed p\u0159i pos\u00edl\u00e1n\u00ed p\u0159\u00edli\u0161 velk\u00fdch hodnot po\u010dtu klient\u016f nebo rozsah\u016f. Zranitelnost se projevuje od vyd\u00e1n\u00ed X11R6.1 (1996).\n<li class=\"l\">  CVE-2025-49180 \u2014 p\u0159ete\u010den\u00ed cel\u00e9ho \u010d\u00edsla vedouc\u00ed k po\u0161kozen\u00ed pam\u011bti v implementaci roz\u0161\u00ed\u0159en\u00ed RandR. Zranitelnost se projevuje od vyd\u00e1n\u00ed 1.13 RC1 (2012).\n<li class=\"l\"> CVE-2025-49178 \u2014 mo\u017enost vytvo\u0159it situaci vedouc\u00ed k blokov\u00e1n\u00ed po\u017eadavk\u016f jin\u00fdch klient\u016f. Zranitelnost se projevuje od vyd\u00e1n\u00ed Xorg 1.10.0.\n<li class=\"l\"> CVE-2025-49175 \u2014 \u010dten\u00ed z pam\u011bti mimo hranice bufferu v roz\u0161\u00ed\u0159en\u00ed X Rendering, k n\u011bmu\u017e doch\u00e1z\u00ed p\u0159i prov\u00e1d\u011bn\u00ed operac\u00ed s animovan\u00fdmi kurzory. Zranitelnost se projevuje od vyd\u00e1n\u00ed XFree86 4.3.0 (2003).\n<li class=\"l\"> CVE-2025-49177 \u2014 \u00fanik dat v implementaci roz\u0161\u00ed\u0159en\u00ed XFIXES zp\u016fsoben\u00fd nedostatkem kontroly velikosti po\u017eadavku klienta v obslu\u017en\u00e9 rutinn\u011b XFixesSetClientDisconnectMode (klient m\u016f\u017ee poslat krat\u0161\u00ed po\u017eadavek a p\u0159e\u010d\u00edst data p\u0159edchoz\u00edho po\u017eadavku). Zranitelnost se projevuje od vyd\u00e1n\u00ed Xorg Server 21.1 RC1 (2021).              <\/ul>\n<p>Dopln\u011bn\u00ed: Na z\u00e1klad\u011b t\u011bchto ud\u00e1lost\u00ed byly vytvo\u0159eny verze X.Org Server 21.1.18 a xwayland 24.1.8, kter\u00e9 zahrnuj\u00ed dodate\u010dn\u00e9 \u00fapravy pro opravou zranitelnosti CVE-2025-49176.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63423\">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 21.1.17 \u0438 DDX-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 (Device-Dependent X) xwayland 24.1.7, \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\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 X.Org Server \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 6 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \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, \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 [&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-137738","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One 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