{"id":93140,"date":"2020-09-03T07:42:03","date_gmt":"2020-09-03T05:42:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kriticheskaya-uyazvimost-v-wordpress-plagine-file-manager-imeyushhem-700-tysyach-ustanovok"},"modified":"2020-09-03T07:42:03","modified_gmt":"2020-09-03T05:42:03","slug":"kriticheskaya-uyazvimost-v-wordpress-plagine-file-manager-imeyushhem-700-tysyach-ustanovok","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/kriticheskaya-uyazvimost-v-wordpress-plagine-file-manager-imeyushhem-700-tysyach-ustanovok","title":{"rendered":"Vulnerabilit\u00e0 critica nel plugin File Manager di WordPress, con 700 mila installazioni","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nel plugin WordPress <noindex><a rel=\"nofollow\" href=\"https:\/\/wordpress.org\/plugins\/wp-file-manager\/\">Gestore File<\/a><\/noindex>, che conta oltre 700.000 installazioni attive, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.wordfence.com\/blog\/2020\/09\/700000-wordpress-users-affected-by-zero-day-vulnerability-in-file-manager-plugin\/\">identificata<\/a><\/noindex> una vulnerabilit\u00e0 che consente l'esecuzione di comandi arbitrari e script PHP sul server. Il problema si manifesta nelle versioni di Gestore File dalla 6.0 alla 6.8 ed \u00e8 stato risolto nella versione 6.9. <\/p>\n<p>Il plugin Gestore File offre strumenti per gestire i file per gli amministratori di WordPress, utilizzando la libreria integrata per operazioni a basso livello sui file <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/Studio-42\/elFinder\">elFinder<\/a><\/noindex>. Nel codice sorgente della libreria elFinder sono presenti file di esempi di codice, forniti nella cartella di lavoro con estensione &#171;.dist&#187;. La vulnerabilit\u00e0 \u00e8 causata dal fatto che, durante la fornitura della libreria, il file &#171;connector.minimal.php.dist&#187; \u00e8 stato rinominato in &#171;connector.minimal.php&#187; ed \u00e8 diventato accessibile per l'esecuzione tramite richieste esterne. Lo script indicato consente di eseguire qualsiasi operazione sui file (upload, open, editor, rename, rm, ecc.), poich\u00e9 i suoi parametri vengono passati alla funzione run() del plugin principale, il che pu\u00f2 essere utilizzato per sostituire i file PHP in WordPress e avviare codice arbitrario.<\/p>\n<p>Il pericolo \u00e8 aggravato dal fatto che la vulnerabilit\u00e0 \u00e8 gi\u00e0 <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.nintechnet.com\/critical-zero-day-vulnerability-fixed-in-wordpress-file-manager-700000-installations\/\">viene utilizzato<\/a><\/noindex> per eseguire attacchi automatizzati, durante i quali nella cartella &#171;plugins\/wp-file-manager\/lib\/files\/&#187; viene caricato un'immagine contenente codice PHP tramite il comando &#171;upload&#187;, che viene poi rinominata in uno script PHP, il cui nome viene scelto casualmente e contiene il testo &#171;hard&#187; o &#171;x.&#187;, ad esempio, hardfork.php, hardfind.php, x.php, ecc.). Dopo l'avvio, il codice PHP aggiunge una backdoor ai file \/wp-admin\/admin-ajax.php e \/wp-includes\/user.php, fornendo agli aggressori accesso all'interfaccia di amministrazione del sito. Sfruttare la vulnerabilit\u00e0 avviene inviando una richiesta POST al file &#171;wp-file-manager\/lib\/php\/connector.minimal.php&#187;. <\/p>\n<p>\u00c8 notevole che, dopo l'hacking, oltre a lasciare un backdoor, vengano apportate modifiche per proteggere ulteriori accessi al file connector.minimal.php, in cui \u00e8 contenuta la vulnerabilit\u00e0, al fine di bloccare la possibilit\u00e0 di attacchi al server da parte di altri aggressori.<br \/>\nLe prime tentativi di attacco sono stati rilevati il 1\u00b0 settembre alle 7:00 (UTC). In<br \/>\n12:33 (UTC) gli sviluppatori del plugin File Manager hanno rilasciato una patch. Secondo le informazioni fornite dall'azienda Wordfence, che ha identificato la vulnerabilit\u00e0, il loro firewall ha bloccato circa 450.000 tentativi di sfruttamento nell'arco di un giorno. La scansione della rete ha mostrato che il 52% dei siti che utilizzano questo plugin non ha ancora eseguito l'aggiornamento e rimangono vulnerabili. Dopo aver installato l'aggiornamento, \u00e8 consigliabile controllare nei log del server HTTP l'accesso allo script &#171;connector.minimal.php&#187; per determinare se il sistema \u00e8 stato compromesso.<\/p>\n<p>In aggiunta, si pu\u00f2 notare il rilascio correttivo <noindex><a rel=\"nofollow\" href=\"https:\/\/wordpress.org\/news\/2020\/09\/wordpress-5-5-1-maintenance-release\/\">WordPress 5.5.1<\/a><\/noindex> in cui sono stati proposti <noindex><a rel=\"nofollow\" href=\"https:\/\/core.trac.wordpress.org\/query?status=closed&#038;milestone=5.5.1&#038;group=status&#038;col=id&#038;col=summary&#038;col=milestone&#038;col=owner&#038;col=type&#038;col=status&#038;col=priority&#038;order=priority\">40 correzioni<\/a><\/noindex>.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53646\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 WordPress-\u043f\u043b\u0430\u0433\u0438\u043d\u0435 File Manager, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 700 \u0442\u044b\u0441\u044f\u0447 \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0445 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043e\u043a, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0438 PHP-\u0441\u043a\u0440\u0438\u043f\u0442\u044b \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 File Manager \u0441 6.0 \u043f\u043e 6.8 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 6.9. \u041f\u043b\u0430\u0433\u0438\u043d File Manager \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0444\u0430\u0439\u043b\u0430\u043c\u0438 \u0434\u043b\u044f \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 WordPress, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0434\u043b\u044f \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0445 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0439 \u0441 \u0444\u0430\u0439\u043b\u0430\u043c\u0438 \u0432\u0445\u043e\u0434\u044f\u0449\u0443\u044e \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 [&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-93140","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 WordPress-\u043f\u043b\u0430\u0433\u0438\u043d\u0435 File Manager, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 700 \u0442\u044b\u0441\u044f\u0447 \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0445 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043e\u043a,\" \/>\n\t<meta name=\"robots\" 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