{"id":103811,"date":"2022-04-18T15:36:44","date_gmt":"2022-04-18T13:36:44","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-7-zip-pozvolyayushhaya-poluchit-privilegii-system-v-windows"},"modified":"2022-04-18T15:36:44","modified_gmt":"2022-04-18T13:36:44","slug":"uyazvimost-v-7-zip-pozvolyayushhaya-poluchit-privilegii-system-v-windows","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-7-zip-pozvolyayushhaya-poluchit-privilegii-system-v-windows","title":{"rendered":"Se ha identificado una vulnerabilidad en 7-Zip que permite obtener privilegios de SYSTEM en Windows.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha detectado una vulnerabilidad en el compresor de archivos gratuito 7-Zip (CVE-2022-29072) que permite ejecutar comandos arbitrarios con privilegios de SYSTEM al mover un archivo especialmente dise\u00f1ado con extensi\u00f3n .7z a la secci\u00f3n con la sugerencia que se muestra al abrir el men\u00fa \u00abAyuda&gt;Contenidos\u00bb. El problema se presenta \u00fanicamente en la plataforma Windows y es causado por una combinaci\u00f3n de una configuraci\u00f3n incorrecta de la biblioteca 7z.dll y un desbordamiento de b\u00fafer.     <\/p>\n<p>Es notable que, tras la notificaci\u00f3n del problema, los desarrolladores de 7-Zip no reconocieron la vulnerabilidad y afirmaron que la fuente de la vulnerabilidad es el proceso Microsoft HTML Helper (hh.exe), que ejecuta c\u00f3digo al mover el archivo. El investigador que descubri\u00f3 la vulnerabilidad considera que hh.exe es solo un participante indirecto en la explotaci\u00f3n de la vulnerabilidad, y que la comando indicada en el exploit se ejecuta en 7zFM.exe como un proceso hijo. Las causas que permiten llevar a cabo el ataque a trav\u00e9s de la inyecci\u00f3n de comandos se atribuyen al desbordamiento de b\u00fafer en el proceso 7zFM.exe y a la configuraci\u00f3n incorrecta de permisos para la biblioteca 7z.dll.       <\/p>\n<p>Como ejemplo, se ha demostrado un archivo de ayuda que ejecuta \u00abcmd.exe\u00bb. Tambi\u00e9n se ha informado sobre la preparaci\u00f3n de un exploit que permite obtener privilegios de SYSTEM en Windows, pero se planea publicar su c\u00f3digo despu\u00e9s de lanzar la actualizaci\u00f3n de 7-Zip que corrige la vulnerabilidad. Dado que las correcciones a\u00fan no se han publicado, se sugiere como medida de protecci\u00f3n limitar a la aplicaci\u00f3n 7-Zip el acceso solo a la opci\u00f3n de lectura y ejecuci\u00f3n.     <center>  <video controls=\"\" style=\"width: 700px; height: 400px; max-width:100%\"><source src=\"https:\/\/user-images.githubusercontent.com\/33525376\/163654035-d40ca72a-7dbc-425f-ade2-3820cfababb2.mp4\" type=\"video\/mp4\"><\/video><\/center><br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57036\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u043c \u0430\u0440\u0445\u0438\u0432\u0430\u0442\u043e\u0440\u0435 7-Zip \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-29072), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0441 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438 SYSTEM \u0447\u0435\u0440\u0435\u0437 \u043f\u0435\u0440\u0435\u043c\u0435\u0449\u0435\u043d\u0438\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430 \u0441 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435\u043c .7z \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u044c c \u043f\u043e\u0434\u0441\u043a\u0430\u0437\u043a\u043e\u0439, \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u043c\u0435\u043d\u044e &#171;Help&gt;Contents&#187;. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 Windows \u0438 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0441\u043e\u0447\u0435\u0442\u0430\u043d\u0438\u0435\u043c \u043d\u0435\u0432\u0435\u0440\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 7z.dll \u0438 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c \u0431\u0443\u0444\u0435\u0440\u0430. \u041f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e, \u0447\u0442\u043e \u043f\u043e\u0441\u043b\u0435 \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u044f \u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 7-Zip [&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-103811","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\" content=\"\u0412 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u043c \u0430\u0440\u0445\u0438\u0432\u0430\u0442\u043e\u0440\u0435 7-Zip \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-29072), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b 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arbitrarios con privilegios de SYSTEM mediante el movimiento de un archivo especialmente dise\u00f1ado con la extensi\u00f3n .7z a la zona.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-7-zip-pozvolyayushhaya-poluchit-privilegii-system-v-windows","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 7-Zip, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c 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