{"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\/es\/blog\/news\/obnovlenie-x-org-server-21-1-9-i-xwayland-23-2-2-s-ustraneniem-uyazvimostej","title":{"rendered":"Actualizaci\u00f3n de X.Org Server 21.1.9 y xwayland 23.2.2 con correcci\u00f3n de vulnerabilidades","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se han publicado las actualizaciones correctivas X.Org Server 21.1.9 y el componente DDX (X dependiente del dispositivo) xwayland 22.2.2, que permite ejecutar el X.Org Server para la ejecuci\u00f3n de aplicaciones X11 en entornos basados en Wayland. En estas nuevas versiones se han corregido vulnerabilidades que podr\u00edan ser explotadas para aumentar privilegios en sistemas donde X Server se ejecuta con derechos de root, as\u00ed como para la ejecuci\u00f3n remota de c\u00f3digo en configuraciones que utilizan el redireccionamiento de sesiones X11 a trav\u00e9s de SSH.       <\/p>\n<p>Problemas identificados:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-5367 \u2014 desbordamiento de b\u00fafer en las funciones XIChangeDeviceProperty y RRChangeOutputProperty, que puede ser explotado al adjuntar elementos adicionales a la propiedad de un dispositivo de entrada o a la propiedad randr. La vulnerabilidad se manifiesta desde la versi\u00f3n xorg-server 1.4.0 (2007) y es causada por el c\u00e1lculo incorrecto de un desplazamiento al adjuntar elementos adicionales a propiedades existentes, lo que provoca que los elementos se a\u00f1adan con un desplazamiento incorrecto, resultando en una escritura en la memoria fuera del b\u00fafer reservado. Por ejemplo, al adjuntar 3 elementos a 5 elementos existentes, se reserva memoria para un arreglo de 8 elementos, pero los elementos previamente existentes se guardan en el nuevo arreglo empezando desde el \u00edndice 5, en lugar de 3, lo que resultar\u00e1 en la escritura de los \u00faltimos dos elementos fuera del b\u00fafer.\n<li class=\"l\"> CVE-2023-5380 \u2014 uso de memoria despu\u00e9s de ser liberada (use-after-free) en la funci\u00f3n DestroyWindow. El problema puede ser explotado mediante el movimiento del puntero entre pantallas en configuraciones de m\u00faltiples monitores en modo zaphod, donde se crea una pantalla para cada monitor y se llama a la funci\u00f3n de cierre de la ventana del cliente. La vulnerabilidad se manifiesta desde la versi\u00f3n xorg-server 1.7.0 (2009) y es causada por el hecho de que despu\u00e9s de cerrar la ventana y liberar la memoria asociada, en la estructura que proporciona el enlace a la pantalla queda un puntero activo al pasado ventana. Xwayland no es susceptible a la vulnerabilidad considerada.\n<li class=\"l\"> CVE-2023-5574 \u2014 uso de memoria despu\u00e9s de ser liberada (use-after-free) en la funci\u00f3n DamageDestroy. La vulnerabilidad puede ser explotada en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-newyork\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2753\">servidor<\/a> Xvfb en el proceso de limpieza de la estructura ScreenRec durante el cierre del servidor o la desconexi\u00f3n del \u00faltimo cliente. Al igual que la vulnerabilidad anterior, el problema solo se manifiesta en configuraciones de m\u00faltiples monitores en modo Zaphod. La vulnerabilidad est\u00e1 presente desde la versi\u00f3n xorg-server-1.13.0 (2012) y a\u00fan no se ha corregido (la soluci\u00f3n solo est\u00e1 disponible en forma de parche).  <\/ul>\n<p>Adem\u00e1s de corregir las vulnerabilidades en xwayland 23.2.2, se ha realizado la transici\u00f3n de la biblioteca libbsd-overlay a libbsd y se ha descontinuado la conexi\u00f3n autom\u00e1tica a la interfaz RemoteDesktop XDG Desktop Portal para determinar el socket utilizado para enviar eventos XTest al compositor. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-shicago\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2929\">servidor<\/a> eventos XTest. La conexi\u00f3n autom\u00e1tica causaba problemas al iniciar Xwayland en un servidor compuesto anidado, por lo que en la nueva versi\u00f3n es necesario especificar expresamente la opci\u00f3n \u00ab-enable-ei-portal\u00bb para conectarse al portal.<br \/>\n<br \/>Fuente: <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 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" 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