{"id":184253,"date":"2026-11-13T17:41:21","date_gmt":"2026-11-13T15:41:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/ataki-na-prilozheniya-ispolzuyushhie-imagemagick-v-konfiguraczii-po-umolchaniyu"},"modified":"2026-11-13T17:41:42","modified_gmt":"2026-11-13T15:41:42","slug":"attacks-on-applications-using-imagemagick-with-default-settings","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/attacks-on-applications-using-imagemagick-with-default-settings","title":{"rendered":"Attacchi alle applicazioni che utilizzano ImageMagick nella configurazione predefinita","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Il Centro di coordinamento CERT (gruppo di risposta agli incidenti informatici) ha pubblicato un avviso riguardante la scoperta di vulnerabilit\u00e0 che colpiscono applicazioni e siti web che utilizzano la libreria ImageMagick nella sua configurazione predefinita per l'elaborazione o la conversione delle immagini. Sfruttare con successo le vulnerabilit\u00e0 consente a un attaccante di leggere e scrivere file, a seconda dei diritti di accesso con cui viene eseguito ImageMagick. Le vulnerabilit\u00e0 hanno ricevuto il nome in codice ImageTragick2, in analogia a un problema scoperto nel 2016. <\/p>\n<p>Negli ultimi due mesi, sono state corrette circa cento vulnerabilit\u00e0 in ImageMagick, ma i problemi segnalati dal CERT non sono causati da errori nel codice di ImageMagick, bens\u00ec dall'uso delle impostazioni predefinite che consentono la chiamata di gestori esterni per i formati SVG e PostScript.<br \/>\nIl gestore in ImageMagick viene selezionato in base al contenuto e non all'estensione del file, quindi se un'applicazione filtra i caricamenti a livello di estensioni, un attaccante pu\u00f2 inviare dati nei formati SVG o PostScript, ad esempio spacciandoli per file con estensione JPEG o PNG. <\/p>\n<p>La possibilit\u00e0 di sfruttare la vulnerabilit\u00e0 \u00e8 stata confermata in applicazioni basate su Ruby on Rails e WordPress, ma non \u00e8 esclusa anche in altri progetti che utilizzano ImageMagick per la conversione delle immagini, il ritaglio e la creazione di miniature, come MediaWiki, ownCloud Classic e Redmine. Il problema riguarda anche gli strumenti AI che invocano ImageMagick durante l'esecuzione di compiti legati all'elaborazione delle immagini.<\/p>\n<p>Vengono forniti due scenari di attacco:<\/p>\n<ul>\n<li class=\"l\"> Chiamata del gestore del contenuto nel linguaggio MSL (Magick Scripting Language) tramite la trasmissione di un'immagine SVG appositamente formattata, in cui l'elemento  contiene un collegamento &#171;xlink:href&#187; a una risorsa con il protocollo &#171;MSL:&#187;. ImageMagick interpreta il contenuto di questa risorsa come uno script nel linguaggio MSL, consentendo operazioni di scrittura e lettura di file negli script MSL. Oltre a MSL, un trucco simile con SVG pu\u00f2 essere utilizzato anche per elaborare altri tipi di contenuto pericolosi.\n<li class=\"l\"> Chiamata dell'interprete Ghostscript per l'elaborazione di contenuti in formato PostScript. Ghostscript viene avviato con il flag &#171;-dSAFER&#187;, che non limita l'accesso alla directory \/tmp, permettendo cos\u00ec all'attaccante di leggere o modificare file in questa directory (ad esempio, le applicazioni possono temporaneamente memorizzare dati di sessione e file caricati in \/tmp). In Ghostscript si trovano regolarmente vulnerabilit\u00e0 che consentono di eludere completamente la restrizione &#171;-dSAFER&#187; (l'ultima vulnerabilit\u00e0 \u00e8 stata rivelata il 10 novembre).\n<\/ul>\n<p>Non \u00e8 sufficiente aggiornare ImageMagick per bloccare le vulnerabilit\u00e0, \u00e8 necessaria una modifica delle impostazioni nel file \/etc\/ImageMagick\/policy.xml, in cui devono rimanere solo i formati e le operazioni pi\u00f9 necessari o, quanto meno, vietare la chiamata a gestori esterni per i formati MSL, MVG, PS, EPS e PDF. Inoltre, si raccomanda di isolare il codice per la conversione di immagini esterne in un contenitore separato, controllare i file non solo in base all'estensione, ma anche al contenuto, e impostare un monitoraggio dei log di ImageMagick per rilevare errori e attivit\u00e0 insolite.<\/p>\n<p>   &lt;policy domain=&#187;coder&#187; rights=&#187;none&#187; pattern=&#187;MSL&#187;\/&gt;<br \/>\n   &lt;policy domain=&#187;delegate&#187; rights=&#187;none&#187; pattern=&#187;gs&#187;\/&gt;<br \/>\n   &lt;policy domain=&#187;coder&#187; rights=&#187;none&#187; pattern=&#187;{PS,PS2,PS3,EPS,EPS2,EPS3,EPI,EPSF,EPSI,EPT,EPT2,EPT3,PDF,AI,EPDF,PDFA,POCKETMOD,XPS,PCL}&#187;\/&gt;<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66679\">opennet.ru<\/a> 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\u0441\u0430\u0439\u0442\u044b, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 ImageMagick \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438\u043b\u0438 \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. \u0423\u0441\u043f\u0435\u0448\u043d\u0430\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0447\u0438\u0442\u0430\u0442\u044c \u0438 \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u0444\u0430\u0439\u043b\u044b, \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u043f\u0440\u0430\u0432\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043f\u043e\u0434 \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f ImageMagick. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f ImageTragick2, \u043f\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0438 \u0441 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043e\u0439, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184253","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0439 \u0446\u0435\u043d\u0442\u0440 CERT (\u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043d\u0430\u044f \u0433\u0440\u0443\u043f\u043f\u0430 \u0440\u0435\u0430\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 \u0447\u0440\u0435\u0437\u0432\u044b\u0447\u0430\u0439\u043d\u044b\u0435 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438), 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(Computer Emergency Response Team) ha pubblicato un avviso riguardante la scoperta di vulnerabilit\u00e0 che interessano applicazioni e siti che utilizzano la libreria ImageMagick.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/attacks-on-applications-using-imagemagick-with-default-settings","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","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\u0410\u0442\u0430\u043a\u0438 \u043d\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0435 ImageMagick 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