{"id":121007,"date":"2024-12-17T21:46:00","date_gmt":"2024-12-17T19:46:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-apache-struts-pozvolyayushhaya-vypolnit-kod-na-servere"},"modified":"2024-12-17T21:46:00","modified_gmt":"2024-12-17T19:46:00","slug":"uyazvimost-v-apache-struts-pozvolyayushhaya-vypolnit-kod-na-servere","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/uyazvimost-v-apache-struts-pozvolyayushhaya-vypolnit-kod-na-servere","title":{"rendered":"S\u00e5rbarhet i Apache Struts som m\u00f6jligg\u00f6r kodk\u00f6rning p\u00e5 servern.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I web-ramverket Apache Struts, som anv\u00e4nds f\u00f6r att skapa web-applikationer i Java med hj\u00e4lp av MVC-paradigmet (Model-View-Controller), har en s\u00e5rbarhet identifierats (CVE-2024-53677). S\u00e5rbarheten ger en extern angripare m\u00f6jlighet att skriva en fil p\u00e5 en godtycklig plats i filsystemet p\u00e5 servern genom att skicka en s\u00e4rskilt utformad HTTP-beg\u00e4ran. Problemet p\u00e5verkar versioner fr\u00e5n 2.0.0 till 2.3.37, fr\u00e5n 2.5.0 till 2.5.33 och fr\u00e5n 6.0.0 till 6.3.0.2, och upptr\u00e4der i applikationer som anv\u00e4nder komponenten FileUploadInterceptor f\u00f6r uppladdning av filer till servern. <\/p>\n

S\u00e5rbarheten beror p\u00e5 bristen p\u00e5 korrekt validering av parametrar som skickas vid filuppladdningar. Om en angripare har tillg\u00e5ng till filuppladdningsfunktioner i webgr\u00e4nssnittet baserat p\u00e5 Apache Struts kan hen ange ett v\u00e4rde som ser ut som «..\\\/..\\\/..\\\/..\\\/..\\\/webapps\\\/ROOT» och lyckas spara en fil utanf\u00f6r katalogen f\u00f6r lagring av uppladdade data (ett exempel p\u00e5 en exploitering). Genom att f\u00e5 m\u00f6jlighet att skriva filer i godtyckliga delar av filsystemet kan man organisera k\u00f6rning av egna kommandon p\u00e5 servern<\/a>, genom att skriva \u00f6ver skript eller konfigurationsfiler, i den utstr\u00e4ckning som r\u00e4ttigheterna f\u00f6r den anv\u00e4ndare som k\u00f6r web-applikationen till\u00e5ter. Om web-applikationen k\u00f6rs i en Apache Tomcat-container som k\u00f6rs med root-r\u00e4ttigheter kan angriparen f\u00e5 privilegierad \u00e5tkomst till systemet. <\/p>\n

S\u00e5rbarheter i Apache Struts \u00e4r betydelsefulla d\u00e5 detta ramverk \u00e4r popul\u00e4rt i f\u00f6retagsystem som \u00e4r tillg\u00e4ngliga via webben. Enligt statistik fr\u00e5n RedMonk anv\u00e4ndes Apache Struts i web-applikationer av 65 % av f\u00f6retagen p\u00e5 Fortune 100-listan. \u00c5r 2017 ledde en attack mot informationssystemet f\u00f6r f\u00f6retaget Equifax, som anv\u00e4nde en s\u00e5rbar version av Apache Struts, till l\u00e4ckage av personuppgifter f\u00f6r 143 miljoner inv\u00e5nare i USA.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 web-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 Apache Struts, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f web-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Java \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u0430\u0440\u0430\u0434\u0438\u0433\u043c\u044b \u041cV\u0421 (Model-View-Controller), \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-53677). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0434\u0430\u0451\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u043d\u0435\u0448\u043d\u0435\u043c\u0443 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0444\u0430\u0439\u043b \u0432 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u0435 \u043c\u0435\u0441\u0442\u043e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \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 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u0441 2.0.0 \u043f\u043e 2.3.37, c 2.5.0 \u043f\u043e 2.5.33 \u0438 \u0441 6.0.0 \u043f\u043e 6.3.0.2, \u0438 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