{"id":123965,"date":"2025-05-03T15:05:07","date_gmt":"2025-05-03T13:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-libjs-pozvolyayushhaya-vypolnit-kod-pri-otkrytii-straniczy-v-brauzere-ladybird"},"modified":"2025-05-03T15:05:07","modified_gmt":"2025-05-03T13:05:07","slug":"uyazvimost-v-libjs-pozvolyayushhaya-vypolnit-kod-pri-otkrytii-straniczy-v-brauzere-ladybird","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-libjs-pozvolyayushhaya-vypolnit-kod-pri-otkrytii-straniczy-v-brauzere-ladybird","title":{"rendered":"Zranite\u013enos\u0165 v LibJS, ktor\u00e1 umo\u017e\u0148uje vykona\u0165 k\u00f3d pri otvoren\u00ed str\u00e1nky v prehliada\u010di Ladybird","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V JavaScript engine LibJS, pou\u017e\u00edvanom v webovom prehliada\u010di Ladybird, bola zisten\u00e1 zranite\u013enos\u0165 (CVE-2025-47154), ktor\u00e1 umo\u017e\u0148uje vykonanie vlastn\u00e9ho k\u00f3du v syst\u00e9me pri spracovan\u00ed \u0161peci\u00e1lne zostaven\u00e9ho JavaScript k\u00f3du. Zranite\u013enos\u0165 je sp\u00f4soben\u00e1 uvo\u013enen\u00edm pam\u00e4te v vektore m_argument_values_buffer, na ktor\u00fd zost\u00e1val ukazovate\u013e v \u0161trukt\u00fare arguments_list, \u010do viedlo k pr\u00edstupu k u\u017e uvo\u013enenej oblasti pam\u00e4te. K dispoz\u00edcii je funk\u010dn\u00fd prototyp exploidu.    <\/p>\n<p>V\u00fdskumn\u00edk, ktor\u00fd identifikoval probl\u00e9m, vykonal fuzzingov\u00e9 testovanie LibJS, po\u010das ktor\u00e9ho bolo zaznamenan\u00fdch 10 havarijn\u00fdch ukon\u010den\u00ed. Anal\u00fdza jednej z ch\u00fdb uk\u00e1zala, \u017ee probl\u00e9m m\u00f4\u017ee by\u0165 zneu\u017eit\u00fd pri spracovan\u00ed JavaScriptov\u00e9ho k\u00f3du. Zranite\u013enos\u0165 umo\u017e\u0148ovala \u010d\u00edta\u0165 a zapisova\u0165 do \u013eubovo\u013en\u00fdch oblast\u00ed pam\u00e4te procesu. Vykonanie k\u00f3du bolo zabezpe\u010den\u00e9 v exploite prostredn\u00edctvom v\u00fdmeny n\u00e1vratovej adresy z funkcie renderovania. Pomocou programovania orientovan\u00e9ho na n\u00e1vraty (ROP - Return-Oriented Programming, exploit sa tvor\u00ed z u\u017e existuj\u00facich fragmentov strojov\u00fdch in\u0161trukci\u00ed, ktor\u00e9 kon\u010dia in\u0161trukciou na n\u00e1vrat ovl\u00e1dania) bola vytvoren\u00e1 re\u0165azec na vykonanie syst\u00e9mov\u00e9ho volania execve pre spustenie extern\u00e9ho aplik\u00e1cie.        <center>  <video controls=\"\" style=\"width: 700px; height: 400px; max-width:100%\"><source src=\"https:\/\/jessie.cafe\/posts\/pwning-ladybirds-libjs\/files\/ladybird-uaf.mp4\" type=\"video\/mp4\"><\/video>  <\/center>        <\/p>\n<p>Prehliada\u010d Ladybird sa vyv\u00edja Andreasom Klingom, ktor\u00fd kedysi pracoval v spolo\u010dnosti Nokia a podie\u013eal sa na v\u00fdvoji KHTML, a potom v Apple bol jedn\u00fdm z v\u00fdvoj\u00e1rov Safari. V s\u00fa\u010dasnej f\u00e1ze v\u00fdvoja sa Ladybird nach\u00e1dza v \u0161t\u00e1diu pre-alfa verzie, vhodnej len pre pou\u017e\u00edvate\u013eov v\u00fdvoj\u00e1\u0159ov. P\u00f4vodne bol projekt vytvoren\u00fd ako aplik\u00e1cia pre opera\u010dn\u00fd syst\u00e9m SerenityOS, ale minul\u00fd rok v lete bol oddelen\u00fd do samostatn\u00e9ho projektu a z\u00edskal dar v hodnote 1 mili\u00f3n dol\u00e1rov. Prehliada\u010d je nap\u00edsan\u00fd v jazyku C++ (rozhodlo sa prejs\u0165 na jazyk Swift) a je distrib\u00faovan\u00fd pod licenciou BSD. Projekt vyv\u00edja vlastn\u00fd engine LibWeb, JavaScript interpretr\u00e1tor LibJS a sprievodn\u00e9 kni\u017enice.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63178\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 JavaScript-\u0434\u0432\u0438\u0436\u043a\u0435 LibJS, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0432 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 Ladybird, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-47154), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u0438 \u043d\u0430 \u0432\u0435\u043a\u0442\u043e\u0440 m_argument_values_buffer, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0441\u0442\u0430\u0432\u0430\u043b\u0441\u044f \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0435 arguments_list, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u043b\u043e \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438. \u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u043f\u043e\u0442\u043e\u0442\u0438\u043f \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u0430. \u0412\u044b\u044f\u0432\u0438\u0432\u0448\u0438\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043f\u0440\u043e\u0432\u0451\u043b fuzzing-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 LibJS, [&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-123965","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 JavaScript-\u0434\u0432\u0438\u0436\u043a\u0435 LibJS, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0432 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 Ladybird, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-47154), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f 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umo\u017e\u0148uje vykonanie vlastn\u00e9ho k\u00f3du v syst\u00e9me pri spracovan\u00ed \u0161peci\u00e1lne zostaven\u00e9ho JavaScript k\u00f3du.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-libjs-pozvolyayushhaya-vypolnit-kod-pri-otkrytii-straniczy-v-brauzere-ladybird","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","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 LibJS, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c 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