{"id":106652,"date":"2023-02-06T18:48:11","date_gmt":"2023-02-06T16:48:12","guid":{"rendered":"https:\/\/prohoster.info\/?p=106652"},"modified":"2023-02-07T12:08:50","modified_gmt":"2023-02-07T10:08:50","slug":"uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","title":{"rendered":"Une vuln\u00e9rabilit\u00e9 dans ImageMagick entra\u00eenant des fuites de contenu de fichiers locaux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dans le paquet ImageMagick, souvent utilis\u00e9 par les d\u00e9veloppeurs web pour la transformation d'images, une vuln\u00e9rabilit\u00e9 CVE-2022-44268 a \u00e9t\u00e9 identifi\u00e9e, pouvant entra\u00eener une fuite de contenu de fichiers lors de la transformation d'images PNG pr\u00e9par\u00e9es par un attaquant \u00e0 l'aide d'ImageMagick. Cette vuln\u00e9rabilit\u00e9 menace les syst\u00e8mes traitant des images externes et permettant ensuite le t\u00e9l\u00e9chargement des r\u00e9sultats de la transformation.    <\/p>\n<p>La vuln\u00e9rabilit\u00e9 est caus\u00e9e par le fait qu'en traitant les images PNG, ImageMagick utilise le contenu du param\u00e8tre \u00ab profile \u00bb du bloc de m\u00e9tadonn\u00e9es pour d\u00e9terminer le nom de fichier du profil \u00e0 inclure dans le fichier r\u00e9sultant. Ainsi, pour attaquer, il suffit d'ajouter \u00e0 l'image PNG un param\u00e8tre \u00ab profile \u00bb avec le chemin de fichier requis (par exemple, \u00ab \/etc\/passwd \u00bb) et lors du traitement d'une telle image, par exemple, en redimensionnant l'image, le contenu du fichier requis sera inclus dans le fichier de sortie. Si au lieu du nom de fichier, \u00ab - \u00bb est sp\u00e9cifi\u00e9, le gestionnaire se bloquera en attente d'une entr\u00e9e depuis le flux standard, ce qui peut \u00eatre utilis\u00e9 pour effectuer une attaque par d\u00e9ni de service (CVE-2022-44267).      <\/p>\n<p>Aucune mise \u00e0 jour corrigeant la vuln\u00e9rabilit\u00e9 n'a encore \u00e9t\u00e9 publi\u00e9e, mais les d\u00e9veloppeurs d'ImageMagick ont recommand\u00e9 comme solution de contournement pour bloquer la fuite de cr\u00e9er une r\u00e8gle dans les param\u00e8tres limitant l'acc\u00e8s \u00e0 certains chemins de fichiers. Par exemple, pour interdire l'acc\u00e8s aux chemins absolus et relatifs dans policy.xml, on peut ajouter :      <\/p>\n<p>Un script pour g\u00e9n\u00e9rer des images PNG exploitant la vuln\u00e9rabilit\u00e9 a d\u00e9j\u00e0 \u00e9t\u00e9 publi\u00e9 en acc\u00e8s libre.    <center><img decoding=\"async\" alt=\"Une vuln\u00e9rabilit\u00e9 dans ImageMagick entra\u00eenant des fuites de contenu de fichiers locaux.\" src=\"\/wp-content\/uploads\/2023\/02\/95b7955c8530899ec98035ac0ffc0e9d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=58610\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 ImageMagick, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0447\u0430\u0441\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f web-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2022-44268, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 ImageMagick \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c PNG-\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0433\u0440\u043e\u0436\u0430\u0435\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0442 \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438 \u0437\u0430\u0442\u0435\u043c \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 PNG-\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f ImageMagick \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 &#171;profile&#187; [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":106653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-106652","post","type-post","status-publish","format-standard","has-post-thumbnail","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 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transformation.","canonical_url":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"fr_FR","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 ImageMagick, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 | ProHoster","og:description":"\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 ImageMagick, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0447\u0430\u0441\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f web-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2022-44268, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u0438.","og:url":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-02-06T16:48:12+00:00","article:modified_time":"2023-02-07T10:08:50+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts\/106652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/comments?post=106652"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/posts\/106652\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/media\/106653"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/media?parent=106652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/categories?post=106652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/fr\/wp-json\/wp\/v2\/tags?post=106652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}