{"id":37147,"date":"2019-10-31T22:16:00","date_gmt":"2019-10-31T19:16:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novaya-uyazvimost-v-ghostscript\/"},"modified":"2019-10-31T22:16:00","modified_gmt":"2019-10-31T19:16:00","slug":"novaya-uyazvimost-v-ghostscript","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/novaya-uyazvimost-v-ghostscript","title":{"rendered":"Nueva vulnerabilidad en Ghostscript","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

No cesa la serie de vulnerabilidades (1<\/a><\/noindex>, 2<\/a><\/noindex>, 3<\/a><\/noindex>, 4<\/a><\/noindex>, 5<\/a><\/noindex>, 6<\/a><\/noindex>) en Ghostscript<\/a><\/noindex>, un conjunto de herramientas para procesar, convertir y generar documentos en formatos PostScript y PDF. Al igual que las vulnerabilidades anteriores, el nuevo problema<\/a><\/noindex> (CVE-2019-10216<\/a><\/noindex>) permite, al procesar documentos espec\u00edficamente formateados, eludir el modo de aislamiento «-dSAFER» (mediante manipulaciones con «.buildfont1») y acceder al contenido del sistema de archivos, lo cual se puede utilizar para organizar un ataque para ejecutar c\u00f3digo arbitrario en el sistema (por ejemplo, mediante la adici\u00f3n de comandos en ~\\\/ .bashrc o ~\\\/ .profile). La correcci\u00f3n est\u00e1 disponible en forma de parche<\/a><\/noindex>. El seguimiento de la actualizaci\u00f3n de paquetes en las distribuciones se puede hacer a trav\u00e9s de las siguientes p\u00e1ginas: Debian<\/a><\/noindex>, Fedora<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, RHEL<\/a><\/noindex>, Arch<\/a><\/noindex>, FreeBSD<\/a><\/noindex>. <\/p>\n

Recordemos que las vulnerabilidades en Ghostscript representan un peligro elevado, ya que este paquete es utilizado en muchas aplicaciones populares para procesar formatos PostScript y PDF. Por ejemplo, Ghostscript se invoca durante la creaci\u00f3n de miniaturas en el escritorio, en la indexaci\u00f3n de datos en segundo plano y durante la conversi\u00f3n de im\u00e1genes. Para llevar a cabo un ataque con \u00e9xito, en muchos casos es suficiente con simplemente cargar un archivo con un exploit o ver un directorio que lo contenga en Nautilus. Las vulnerabilidades en Ghostscript tambi\u00e9n se pueden explotar a trav\u00e9s de controladores de im\u00e1genes basados en los paquetes ImageMagick y GraphicsMagick, pasando a ellos un archivo JPEG o PNG en el que, en lugar de una imagen, se encuentra c\u00f3digo PostScript (dicho archivo ser\u00e1 procesado en Ghostscript, ya que el tipo MIME se reconoce por el contenido y no se basa en la extensi\u00f3n). <\/p>\n

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

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

\u041d\u0435 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0434\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 (1, 2, 3, 4, 5, 6) \u0432 Ghostscript, \u043d\u0430\u0431\u043e\u0440\u0435 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438, \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0430\u0445 PostScript \u0438 PDF. \u041a\u0430\u043a \u0438 \u043f\u0440\u043e\u0448\u043b\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043d\u043e\u0432\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 (CVE-2019-10216) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u043e\u0431\u043e\u0439\u0442\u0438 \u0440\u0435\u0436\u0438\u043c \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 «-dSAFER» (\u0447\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 \u0441 «.buildfont1») \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u043c\u0443 \u0424\u0421, \u0447\u0442\u043e \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c […]<\/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-37147","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\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\udd47 Nueva vulnerabilidad en Ghostscript | ProHoster","description":"No cesa la serie de vulnerabilidades (1,","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/novaya-uyazvimost-v-ghostscript","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c 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