{"id":82511,"date":"2020-05-22T07:42:23","date_gmt":"2020-05-22T05:42:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-apache-tomcat-dopuskayushhaya-udalyonnoe-vypolnenie-koda"},"modified":"2020-05-22T07:42:23","modified_gmt":"2020-05-22T05:42:23","slug":"uyazvimost-v-apache-tomcat-dopuskayushhaya-udalyonnoe-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/uyazvimost-v-apache-tomcat-dopuskayushhaya-udalyonnoe-vypolnenie-koda","title":{"rendered":"Zranitelnost v Apache Tomcat umo\u017e\u0148uj\u00edc\u00ed vzd\u00e1len\u00e9 spu\u0161t\u011bn\u00ed k\u00f3du","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@tomcat.apache.org\/msg00414.html\">Byly zve\u0159ejn\u011bny<\/a> Informace o zranitelnosti (CVE-2020-9484) v Apache Tomcat, otev\u0159en\u00e9 implementaci technologi\u00ed Java Servlet, JavaServer Pages, Java Expression Language a Java WebSocket. Probl\u00e9m umo\u017e\u0148uje proveden\u00ed k\u00f3du na serveru zasl\u00e1n\u00edm speci\u00e1ln\u011b p\u0159ipraven\u00e9ho po\u017eadavku. Zranitelnost byla odstran\u011bna ve verz\u00edch Apache Tomcat 10.0.0-M5, 9.0.35, 8.5.55 a 7.0.104.<\/p>\n<p>Pro \u00fasp\u011b\u0161n\u00e9 zneu\u017eit\u00ed zranitelnosti mus\u00ed \u00fato\u010dn\u00edk m\u00edt mo\u017enost kontrolovat obsah a n\u00e1zev souboru na <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-dronten\/\" title=\"serveru\" data-wpil-keyword-link=\"linked\">serveru<\/a> (nap\u0159\u00edklad, pokud aplikace umo\u017e\u0148uje nahr\u00e1v\u00e1n\u00ed dokument\u016f nebo obr\u00e1zk\u016f). Krom\u011b toho je \u00fatok mo\u017en\u00fd pouze na syst\u00e9mech, kter\u00e9 pou\u017e\u00edvaj\u00ed PersistenceManager se \u00falo\u017ei\u0161t\u011bm FileStore, v jeho\u017e nastaven\u00ed je parametr sessionAttributeValueClassNameFilter nastaven na hodnotu &#171;null&#187; (v\u00fdchoz\u00ed, pokud se nepou\u017e\u00edv\u00e1 SecurityManager) nebo je vybr\u00e1n slab\u00fd filtr, kter\u00fd umo\u017e\u0148uje deserializaci objektu. \u00dato\u010dn\u00edk mus\u00ed tak\u00e9 zn\u00e1t nebo uh\u00e1dnout cestu k ovl\u00e1dan\u00e9mu souboru, vzhledem k um\u00edst\u011bn\u00ed \u00falo\u017ei\u0161t\u011b FileStore.<\/p>\n<p><a rel=\"nofollow\" name=\"link\"><\/a><\/p>\n<p>Zdroj: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53001\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2020-9484) \u0432 Apache Tomcat, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 Java Servlet, JavaServer Pages, Java Expression Language \u0438 Java WebSocket. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 Apache Tomcat 10.0.0-M5, 9.0.35, 8.5.55 \u0438 7.0.104. \u0414\u043b\u044f \u0443\u0441\u043f\u0435\u0448\u043d\u043e\u0439 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u0434\u043e\u043b\u0436\u0435\u043d \u0438\u043c\u0435\u0442\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0438 [&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-82511","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2020-9484) \u0432 Apache Tomcat, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 Java Servlet.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" 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