{"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\/fr\/blog\/news\/novaya-uyazvimost-v-ghostscript","title":{"rendered":"Nouvelle vuln\u00e9rabilit\u00e9 dans Ghostscript","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Une s\u00e9rie d vuln\u00e9rabilit\u00e9s se poursuit (1<\/a><\/noindex>, 2<\/a><\/noindex>, 3<\/a><\/noindex>, 4<\/a><\/noindex>, 5<\/a><\/noindex>, 6<\/a><\/noindex>) dans Ghostscript<\/a><\/noindex>, un ensemble d'outils pour le traitement, la conversion et la g\u00e9n\u00e9ration de documents au format PostScript et PDF. Comme les vuln\u00e9rabilit\u00e9s pr\u00e9c\u00e9dentes, un nouveau probl\u00e8me<\/a><\/noindex> (CVE-2019-10216<\/a><\/noindex>) permet lors du traitement de documents sp\u00e9cialement format\u00e9s de contourner le mode d'isolation «-dSAFER» (via des manipulations avec «.buildfont1») et d'acc\u00e9der au contenu du FS, ce qui peut \u00eatre utilis\u00e9 pour organiser une attaque permettant l'ex\u00e9cution de code arbitraire dans le syst\u00e8me (par exemple, en ajoutant des commandes dans ~\\\/ .bashrc ou ~\\\/ .profile). La correction est disponible sous forme de d'un correctif<\/a><\/noindex>. Le suivi de la publication des mises \u00e0 jour des paquets dans les distributions peut \u00eatre r\u00e9alis\u00e9 sur ces pages : Debian<\/a><\/noindex>, Fedora<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, RHEL<\/a><\/noindex>, Arch<\/a><\/noindex>, FreeBSD<\/a><\/noindex>. <\/p>\n

Rappelons que les vuln\u00e9rabilit\u00e9s dans Ghostscript repr\u00e9sentent un danger accru, car ce paquet est utilis\u00e9 dans de nombreuses applications populaires pour le traitement des formats PostScript et PDF. Par exemple, Ghostscript est appel\u00e9 lors de la cr\u00e9ation de miniatures sur le bureau, lors de l'indexation des donn\u00e9es en arri\u00e8re-plan et lors de la conversion d'images. Pour qu'une attaque r\u00e9ussisse, dans de nombreux cas, il suffit de t\u00e9l\u00e9charger un fichier contenant un exploit ou de visualiser le r\u00e9pertoire contenant celui-ci dans Nautilus. Les vuln\u00e9rabilit\u00e9s dans Ghostscript peuvent \u00e9galement \u00eatre exploit\u00e9es via des gestionnaires d'images bas\u00e9s sur les paquets ImageMagick et GraphicsMagick, en leur transmettant un fichier JPEG ou PNG, dans lequel le code PostScript remplace l'image (ce fichier sera trait\u00e9 dans Ghostscript, car le type MIME est reconnu par le contenu, et non en se fiant \u00e0 l'extension). <\/p>\n

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

Source : 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\udd47Nouvelle vuln\u00e9rabilit\u00e9 dans Ghostscript | ProHoster","description":"Une s\u00e9rie d vuln\u00e9rabilit\u00e9s se poursuit (1,","canonical_url":"https:\/\/prohoster.info\/fr\/blog\/news\/novaya-uyazvimost-v-ghostscript","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"fr_FR","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c 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