{"id":104640,"date":"2022-07-12T21:36:50","date_gmt":"2022-07-12T19:36:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-4-s-ustraneniem-uyazvimostej"},"modified":"2022-07-12T21:36:50","modified_gmt":"2022-07-12T19:36:50","slug":"obnovlenie-x-org-server-21-1-4-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/obnovlenie-x-org-server-21-1-4-s-ustraneniem-uyazvimostej","title":{"rendered":"Uppdatering av X.Org Server 21.1.4 med s\u00e4kerhetsfixar","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

En korrigerande version av X.Org Server 21.1.4 har blivit tillg\u00e4nglig, d\u00e4r tv\u00e5 s\u00e5rbarheter i hanterarna f\u00f6r Xkb-till\u00e4gg har \u00e5tg\u00e4rdats. Dessa s\u00e5rbarheter m\u00f6jligg\u00f6r f\u00f6r en anv\u00e4ndare att h\u00f6ja sina privilegier i systemet om X-servern k\u00f6rs med root-r\u00e4ttigheter, eller att k\u00f6ra kod p\u00e5 en fj\u00e4rrsystem om sessionen omdirigeras via SSH. S\u00e5rbarheterna beror p\u00e5 bristande kontroll av storleken i hanterarna f\u00f6r f\u00f6rfr\u00e5gningar ProcXkbSetGeometry (CVE-2022-2319) och ProcXkbSetDeviceInfo (CVE-2022-2320), vilket kan utnyttjas f\u00f6r att skriva till minnesomr\u00e5den utanf\u00f6r den tilldelade bufferten. <\/p>\n

I fallet ProcXkbSetGeometry saknades kontrollen av storleken p\u00e5 beg\u00e4ran, vilket gjorde att kunden kunde orsaka ett \u00f6verfl\u00f6de genom att ange ett antal sektioner som inte st\u00e4mde \u00f6verens med de faktiskt skickade data. I hanteraren ProcXkbSetDeviceInfo orsakades s\u00e5rbarheten av felaktig anropsordning - kontrollfunktionen f\u00f6r parametrarna anropades efter funktionen d\u00e4r dessa parametrar anv\u00e4ndes (funktionernas namn hade f\u00f6rv\u00e4xlats, och funktionen XkbSetDeviceInfo inneh\u00f6ll kod f\u00f6r kontroll, medan XkbSetDeviceInfoCheck var avsedd f\u00f6r att st\u00e4lla in v\u00e4rden).
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a X.Org Server 21.1.4, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u0445 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f Xkb, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u0435\u0441\u043b\u0438 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, \u0438\u043b\u0438 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ProcXkbSetGeometry (CVE-2022-2319) \u0438 […]<\/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-104640","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Uppdatering av X.Org Server 21.1.4 med \u00e5tg\u00e4rdade s\u00e5rbarheter | ProHoster","description":"En korrigerande version av X.Org Server 21.1.4 har blivit tillg\u00e4nglig, d\u00e4r tv\u00e5 s\u00e5rbarheter i hanterarna f\u00f6r Xkb-till\u00e4gg har \u00e5tg\u00e4rdats, vilket g\u00f6r att en anv\u00e4ndare kan h\u00f6ja sina privilegier i systemet om X-servern k\u00f6rs med 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