{"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\/da\/blog\/news\/obnovlenie-x-org-server-21-1-4-s-ustraneniem-uyazvimostej","title":{"rendered":"X.Org Server 21.1.4 update addressing vulnerabilities","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Der korrigierende udgave af X.Org Server 21.1.4 er tilg\u00e6ngelig, hvor to s\u00e5rbarheder i h\u00e5ndtererne til Xkb-udvidelsen er blevet l\u00f8st. Disse s\u00e5rbarheder muligg\u00f8r, at man kan h\u00e6ve sine privilegier i systemet, hvis X-serveren k\u00f8rer med root-rettigheder, eller udf\u00f8re kode p\u00e5 et fjernsystem, n\u00e5r der anvendes SSH til session forwarding. S\u00e5rbarhederne skyldes manglende korrekt st\u00f8rrelsekontrol i anmodningsh\u00e5ndtererne ProcXkbSetGeometry (CVE-2022-2319) og ProcXkbSetDeviceInfo (CVE-2022-2320), som kan udnyttes til at skrive til hukommelsesomr\u00e5der uden for den tildelte buffer. <\/p>\n

I tilf\u00e6lde af ProcXkbSetGeometry manglede der en kontrol af st\u00f8rrelsen p\u00e5 foresp\u00f8rgselsfelterne, hvilket gjorde det muligt for klienten at for\u00e5rsage en overfyldning ved at angive et antal sektioner i foresp\u00f8rgslen, der ikke svarede til de faktiske data, der blev sendt. I h\u00e5ndtereren ProcXkbSetDeviceInfo er s\u00e5rbarheden for\u00e5rsaget af en forkert r\u00e6kkef\u00f8lge af funktionsopkald - funktionen til at kontrollere parametre blev kaldt efter funktionen, hvor disse parametre blev brugt (funktionsnavnene var forvekslet, og funktionen XkbSetDeviceInfo inkluderede kode til kontrol, mens XkbSetDeviceInfoCheck var til at indstille v\u00e6rdier).
\n
Kilde: 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\udd47Opdatering af X.Org Server 21.1.4 med l\u00f8sning af s\u00e5rbarheder | ProHoster","description":"Der er tilg\u00e6ngelig en korrigerende udgave af X.Org Server 21.1.4, hvor to s\u00e5rbarheder i h\u00e5ndtererne til Xkb-udvidelsen er blevet adresseret, hvilket tillader h\u00e6velse af privilegier i systemet, hvis X-serveren k\u00f8rer med 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