{"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\/nl\/blog\/news\/obnovlenie-x-org-server-21-1-9-i-xwayland-23-2-2-s-ustraneniem-uyazvimostej","title":{"rendered":"Update van X.Org Server 21.1.9 en xwayland 23.2.2 die kwetsbaarheden verhelpt","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Correcties voor X.Org Server 21.1.9 en DDX-component (Device-Dependent X) xwayland 22.2.2 zijn gepubliceerd, wat de werking van X.Org Server mogelijk maakt voor het uitvoeren van X11-applicaties in omgevingen die zijn gebaseerd op Wayland. In de nieuwe versies zijn kwetsbaarheden verholpen die potentieel konden worden misbruikt om privileges te verhogen in systemen waar de X-server draait met rootrechten, evenals voor het op afstand uitvoeren van code in configuraties waar toegang wordt verkregen via het omleiden van X11-sessies met behulp van SSH.       <\/p>\n<p>Geconstateerde problemen:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-5367 \u2014 buffer overflow in the functions XIChangeDeviceProperty and RRChangeOutputProperty, which can be exploited by attaching additional elements to an input device property or a randr property. The vulnerability manifests starting from the xorg-server release 1.4.0 (2007) and is caused by the calculation of an incorrect offset when attaching additional elements to existing properties, resulting in elements being added with the wrong offset, leading to writing in memory beyond the allocated buffer. For example, when attaching 3 elements to the existing 5 elements, memory is allocated for an array of 8 elements, but the previously existing elements are retained in the new array starting from index 5, rather than 3, causing the last two elements to be written out of bounds.\n<li class=\"l\"> CVE-2023-5380 \u2014 use-after-free issue in the DestroyWindow function. The problem can be exploited by moving the pointer between screens in multi-monitor configurations in zaphod mode, where a separate screen is created for each monitor, and calling the function to close the client window. The vulnerability manifests starting from the xorg-server release 1.7.0 (2009) and is caused by the fact that after closing a window and freeing the associated memory, an active pointer to the previous window remains in the screen binding structure. Xwayland is not subject to the vulnerability in question.\n<li class=\"l\"> CVE-2023-5574 \u2014 use-after-free issue in the DamageDestroy function. The vulnerability can be exploited in <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-newyork\/\"   title=\"de server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2753\">de server<\/a> Xvfb in het proces van het opschonen van de structuur ScreenRec tijdens het afsluiten van de server of het loskoppelen van de laatste cli\u00ebnt. Net als de vorige kwetsbaarheid doet het probleem zich alleen voor in multi-monitorconfiguraties in de Zaphod-modus. De kwetsbaarheid is aanwezig sinds de release van xorg-server-1.13.0 (2012) en is tot nu toe niet opgelost (oplossing is alleen in de vorm van een patch).  <\/ul>\n<p>Naast het verhelpen van kwetsbaarheden in xwayland 23.2.2 is er ook een overstap gemaakt van de libbsd-overlay bibliotheek naar libbsd en is de automatische verbinding met de RemoteDesktop XDG Desktop Portal interface voor het bepalen van de socket die wordt gebruikt voor het verzenden van de evenementen XTest gestopt. Automatische verbinding veroorzaakte problemen bij het starten van xwayland in een genestelde composietserver, daarom moet in de nieuwe versie de optie \u2018-enable-ei-portal\u2019 expliciet worden opgegeven voor verbinding met het portaal. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2929\">server<\/a> XTest events. Automatic connection created problems when starting Xwayland in a nested composite server, so in the new version, it is necessary to explicitly specify the option \u2018-enable-ei-portal\u2019 to connect to the portal.<br \/>\n<br \/>Bron: <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 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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