{"id":113646,"date":"2024-02-16T22:02:41","date_gmt":"2024-02-16T20:02:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-node-js-i-libuv"},"modified":"2024-02-16T22:02:41","modified_gmt":"2024-02-16T20:02:41","slug":"uyazvimosti-v-node-js-i-libuv","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimosti-v-node-js-i-libuv","title":{"rendered":"Vulnerabilit\u0103\u021bi \u00een Node.js \u0219i libuv","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Sunt disponibile versiunile corective ale platformei server JavaScript Node.js 21.6.2, 20.11.1, 18.19.1, \u00een care au fost remediate 8 vulnerabilit\u0103\u021bi, dintre care 4 au fost clasificate cu un nivel ridicat de severitate:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2024-21892 \u2014 posibilitatea unui utilizator f\u0103r\u0103 privilegii de a injecta cod care mo\u0219tene\u0219te privilegii extinse, cu care este executat procesul. Vulnerabilitatea este cauzat\u0103 de o eroare \u00een implementarea excep\u021biei, permi\u021b\u00e2nd procesarea variabilelor de mediu setate de un utilizator f\u0103r\u0103 privilegii \u00een cadrul unui proces cu privilegii extinse. Excep\u021bia ar fi trebuit s\u0103 fie acordat\u0103 doar pentru permisiunile CAP_NET_BIND_SERVICE, dar din cauza eroarei s-a aplicat \u0219i la alte permisiuni (capabilities).\n<li class=\"l\"> CVE-2024-22019 \u2014 atac de refuz al serviciului prin epuizarea resurselor disponibile (\u00eenc\u0103rcare CPU \u0219i consum de band\u0103) \u00een procesarea cererilor chunked, concepute special, de c\u0103tre serverul HTTP \u00eencorporat, care duce la citirea unor cantit\u0103\u021bi nelimitate de bytes \u00eentr-o singur\u0103 conexiune.\n<li class=\"l\"> CVE-2024-21896 \u2014 ie\u0219ire \u00een afara arborelui de directoare de baz\u0103 \u00een c\u0103ile de fi\u0219iere. Vulnerabilitatea permite ocolirea normaliz\u0103rii c\u0103ilor de fi\u0219iere prin metoda path.resolve() \u00een cazul \u00een care se transmite un path folosind clasa Buffer. Pentru a ob\u021bine un astfel de path, dup\u0103 verificare se apeleaz\u0103 metoda Buffer.from(), dar \u00een aplica\u021bie poate fi folosit apelul Buffer.prototype.utf8Write, conduc\u00e2nd la \u00eenlocuirea con\u021binutului \u00eentr-o etap\u0103 ulterioar\u0103 execu\u021biei path.resolve() \u0219i la apari\u021bia vulnerabilit\u0103\u021bii.\n<li class=\"l\"> CVE-2024-22017 \u2014 apelul setuid() nu a resetat toate privilegiile. \u00cen particular, setuid() nu afecteaz\u0103 opera\u021biile io_uring, utilizate \u00een libuv, dac\u0103 acestea au fost ini\u021bializate \u00eenainte de apelul setuid().\n<li class=\"l\"> CVE-2023-46809 \u2014 vulnerabilitate \u00een API-ul privateDecrypt(), care permite atacul Marvin pentru decriptarea RSA pe baza m\u0103sur\u0103rii timpului opera\u021biunilor.\n<li class=\"l\"> CVE-2024-21891 \u2014 posibilitatea de a ocoli modelul de control al accesului prin utilizarea unor handleri personaliza\u021bi pentru normalizarea c\u0103ilor de fi\u0219iere.\n<li class=\"l\"> CVE-2024-21890 \u2014 gestionarea incorect\u0103 a m\u0103\u0219tilor \u00een parametrii \u201e\u2014allow-fs-read\u201d \u0219i \u201e\u2014allow-fs-write\u201d. De exemplu, \u201e\u2014allow-fs-read=\/home\/node\/.ssh\/*.pub\u201d va conduce la furnizarea accesului la tot con\u021binutul \u201e.ssh\/\u201d, \u0219i nu doar la fi\u0219ierele cu extensia \u201e.pub\u201d, deoarece masca \u201e*\u201d este tratat\u0103 ca ultimul element al c\u0103ii.\n<li class=\"l\"> CVE-2024-22025 \u2014 atac de refuz al serviciului prin epuizarea resurselor la decodarea datelor comprimate \u00een format Brotli, ob\u021binute prin apelul fetch().          <\/ul>\n<p>De asemenea, merit\u0103 men\u021bionat\u0103 lansarea versiunii 1.48.0 a bibliotecii libuv, utilizat\u0103 \u00een Node.js pentru multiplexarea conexiunilor \u0219i procesarea asynchronic\u0103 a inputului\/ie\u0219irii. Pe l\u00e2ng\u0103 Node.js, biblioteca este folosit\u0103 \u0219i \u00een serverele DNS BIND 9 \u0219i Knot DNS, serverul HTTP H2O, \u0219i cadrul Lua Luvit.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/vps\/abuzoustojchivye-vps\/\"   title=\"ma\u0219ina virtual\u0103\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4302\">ma\u0219ina virtual\u0103<\/a> MoarVM, limbajul Julia \u0219i cadrul Python uvloop. \u00cen noua versiune a fost corectat\u0103 vulnerabilitatea (CVE-2024-24806), care se manifest\u0103 \u00een proiectele care folosesc libuv \u0219i care permite un atac SSRF (Server-side request forgery) pentru a ob\u021bine acces la API-ul intern. Vulnerabilitatea a ap\u0103rut din cauza t\u0103ierii numelui gazdelor de c\u0103tre func\u021bia uv_getaddrinfo() la 256 de caractere \u00een etapa anterioar\u0103 rezolv\u0103rii domeniului prin func\u021bia getaddrinfo(), ceea ce poate duce la identificarea gre\u0219it\u0103 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/lir\/ipv4\/\"   title=\"adrese IP\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"665\">adrese IP<\/a> \u0219i ocolirea verific\u0103rilor. De exemplu, servicii de tip MySpace, care creeaz\u0103 subdomenii de forma &#171;username.example.com&#187;, pot fi atacate prin specificarea unui nume de utilizator lung.      <\/p>\n<p>De asemenea, a fost lansat\u0103 actualizarea clientului HTTP utilizat \u00een Node.js, undici 5.28.3, \u00een care a fost corectat\u0103 vulnerabilitatea (CVE-2024-24758), cauzat\u0103 de lipsa cur\u0103\u021b\u0103rii antetului HTTP Proxy-Authorization la redirec\u021bionarea cererilor.<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60612\">opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Node.js 21.6.2, 20.11.1, 18.19.1, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 4 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438: CVE-2024-21892 &#8212; \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u043a\u043e\u0434\u0430, \u043d\u0430\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438, \u0441 \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0441 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u043c\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f, \u0432\u044b\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c. \u0418\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 [&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-113646","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=\"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u044b 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JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Node.js 21.6.2, 20.11.1, 18.19.1, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 4 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438: CVE-2024-21892 -.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimosti-v-node-js-i-libuv\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta 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CVE-2024-21892.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimosti-v-node-js-i-libuv","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\u0438 \u0432 Node.js \u0438 libuv | ProHoster","og:description":"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Node.js 21.6.2, 20.11.1, 18.19.1, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 4 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438: CVE-2024-21892 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