{"id":36383,"date":"2019-10-31T22:11:21","date_gmt":"2019-10-31T19:11:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-v-fbdev-ekspluatiruemaya-pri-podklyuchenii-vredonosnogo-ustrojstva-vyvoda\/"},"modified":"2019-10-31T22:11:21","modified_gmt":"2019-10-31T19:11:21","slug":"uyazvimost-v-fbdev-ekspluatiruemaya-pri-podklyuchenii-vredonosnogo-ustrojstva-vyvoda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/uyazvimost-v-fbdev-ekspluatiruemaya-pri-podklyuchenii-vredonosnogo-ustrojstva-vyvoda","title":{"rendered":"Eine Schwachstelle in fbdev, die beim Anschluss eines sch\u00e4dlichen Ausgabeger\u00e4ts ausgenutzt wird.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Im fbdev-Subsystem (Framebuffer) wurde eine Schwachstelle<\/a><\/noindex>, das zu einem Stack-\u00dcberlauf des Kernels um 64 Byte f\u00fchren kann, wenn fehlerhaft formatierte EDID-Parameter verarbeitet werden. Ein Angriff kann durch den Anschluss eines b\u00f6sartigen Monitors, Projektors oder eines anderen Ausgabeger\u00e4ts (zum Beispiel eines speziell vorbereiteten Ger\u00e4ts, das einen Monitor simuliert) an den Computer durchgef\u00fchrt werden. Interessanterweise reagierte als Erster<\/a><\/noindex> Linus Torvalds, der Alternativen zu den Begriffen \u201ewhitelist\/blacklist\u201c und \u201emaster\/slave\u201c vor, die f\u00fcr die Verwendung in Spezifikationen bevorzugt werden \u2013 anstelle von \u201emaster\/slave\u201c wird empfohlen, \u201eprimary\/secondary\u201c, \u201eleader\/follower\u201c,<\/a><\/noindex> ein selbstgeschriebenes Patch mit der Korrektur bereitstellte.<\/p>\n

<\/a><\/noindex><\/p>\n

Quelle: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 fbdev (Framebuffer) \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0441\u0442\u0435\u043a\u0430 \u044f\u0434\u0440\u0430 \u043d\u0430 64 \u0431\u0430\u0439\u0442\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 EDID. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u0435\u043d\u0430 \u0447\u0435\u0440\u0435\u0437 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043a \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0443 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0430, \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0440\u0430 \u0438\u043b\u0438 \u0438\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432\u044b\u0432\u043e\u0434\u0430 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430, \u0441\u0438\u043c\u0443\u043b\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e \u043c\u043e\u043d\u0438\u0442\u043e\u0440). \u0418\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u0447\u0442\u043e \u043d\u0430 \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u0435 \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0435\u0440\u0432\u044b\u043c \u043e\u0442\u043a\u043b\u0438\u043a\u043d\u0443\u043b\u0441\u044f \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b 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