{"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\/sl\/blog\/news\/uyazvimosti-v-node-js-i-libuv","title":{"rendered":"Vulnerabilnosti u Node.js i libuv","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dostupni su ispravci za poslu\u017eiteljsku JavaScript platformu Node.js 21.6.2, 20.11.1, 18.19.1, koji popravljaju 8 ranjivosti, od kojih su 4 ocijenjene kao visokorizi\u010dne:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2024-21892 \u2014 omogo\u010dnost zni\u017eanja privilegijev za neprivilegiranega uporabnika, ki lahko vstavi kodo, ki podeduje raz\u0161irjene privilegije, s katerimi poteka delovni proces. Ranljivost je posledica napake v izvedbi izjeme, ki omogo\u010da obdelovanje okolijskih spremenljivk, ki jih postavi neprivilegiran uporabnik, v procesu z raz\u0161irjenimi privilegiji. Izjema bi morala biti dodeljena samo za pooblastila CAP_NET_BIND_SERVICE, vendar je bila zaradi napake uporabljena tudi za nekatera druga pooblastila (capabilities).\n<li class=\"l\"> CVE-2024-22019 \u2014 napad zavrnitve storitve zaradi iz\u010drpanja razpolo\u017eljivih virov (obremenitev CPU in poraba pasovne \u0161irine) pri obdelavi posebej oblikovanih chunked zahtevkov, ki jih upravlja vgrajeni HTTP stre\u017enik, kar vodi v branje neomejenega \u0161tevila bajtov v eni povezavi.\n<li class=\"l\"> CVE-2024-21896 \u2014 prekora\u010ditev osnovne mape v datote\u010dnih poteh. Ranljivost omogo\u010da obhod normalizacije datote\u010dnih poti z uporabo path.resolve() v primeru, da se pot posreduje z uporabo razreda Buffer. Za pridobitev tak\u0161ne poti se po preverjanju pokli\u010de metoda Buffer.from(), vendar se lahko v aplikaciji uporablja klic Buffer.prototype.utf8Write, kar vodi do zamenjave vsebine na stopnji po izvedbi path.resolve() in do nastanka ranljivosti.\n<li class=\"l\"> CVE-2024-22017 \u2014 klic setuid() ni onemogo\u010dil vseh privilegijev. Konkretno, setuid() ne vpliva na operacije io_uring, ki se uporabljajo v libuv, \u010de so bile inicializirane pred klicem setuid().\n<li class=\"l\"> CVE-2023-46809 \u2014 ranljivost v API-ju privateDecrypt(), ki dopu\u0161\u010da uporabo Marvinove napadalne metode za de\u0161ifriranje RSA na podlagi merjenja \u010dasa operacij.\n<li class=\"l\"> CVE-2024-21891 \u2014 mo\u017enost obhoda modela dostopnih pravic pri uporabi uporabni\u0161kih obdelovalcev za normalizacijo datote\u010dnih poti.\n<li class=\"l\"> CVE-2024-21890 \u2014 nepravilno obravnavanje mask v parametrih \u2018\u2014allow-fs-read\u2019 in \u2018\u2014allow-fs-write\u2019. Na primer, \u2018\u2014allow-fs-read=\/home\/node\/.ssh\/*.pub\u2019 bo omogo\u010dil dostop do vsebine \u2018.ssh\/\u2019, ne le do datotek s kon\u010dnico \u2018.pub\u2019, kajti maska \u2018*\u2019 se obravnava kot zadnji element poti.\n<li class=\"l\"> CVE-2024-22025 \u2014 napad zavrnitve storitve zaradi iz\u010drpanja virov pri dekodiranju stisnjenih podatkov v formatu Brotli, pridobljenih preko klica fetch().          <\/ul>\n<p>\u0422\u0430\u043a\u0436\u0435 \u0441\u0442\u043e\u0438\u0442 \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c \u0432\u044b\u0445\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libuv 1.48.0, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0432 Node.js \u0434\u043b\u044f \u043c\u0443\u043b\u044c\u0442\u0438\u043f\u043b\u0435\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u0438 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430. \u041a\u0440\u043e\u043c\u0435 Node.js, \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0442\u0430\u043a\u0436\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043d\u0430 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 BIND 9 \u0438 Knot DNS, HTTP-\u0441\u0435\u0440\u0432\u0435\u0440\u0435 H2O, Lua-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 Luvit,  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/vps\/abuzoustojchivye-vps\/\"   title=\"virtualni napravi\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4302\">virtualni napravi<\/a> MoarVM, \u044f\u0437\u044b\u043a\u0435 Julia \u0438 Python-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 uvloop. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-24806), \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0435\u043c\u0430\u044f \u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0430\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 libuv, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0438\u0442\u044c \u0430\u0442\u0430\u043a\u0443 SSRF (Server-side request forgery) \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u043c\u0443 API. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u043e\u0437\u043d\u0438\u043a\u043b\u0430 \u0438\u0437-\u0437\u0430 \u043e\u0431\u0440\u0435\u0437\u0430\u043d\u0438\u044f \u0445\u043e\u0441\u0442\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 uv_getaddrinfo() \u0434\u043e 256 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u043d\u0430 \u044d\u0442\u0430\u043f\u0435 \u0434\u043e \u0440\u0435\u0437\u043e\u043b\u0432\u0438\u043d\u0433\u0430 \u0434\u043e\u043c\u0435\u043d\u0430 \u0447\u0435\u0440\u0435\u0437 getaddrinfo(), \u0447\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u043c\u0443 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044e <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/lir\/ipv4\/\"   title=\"IP-naslove\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"665\">IP-naslove<\/a> in obvodenju preverjanj. Na primer, storitve, kot je MySpace, ki ustvarjajo poddomene v obliki &#171;username.example.com&#187;, je mogo\u010de napasti z navedbo dolgega uporabni\u0161kega imena.      <\/p>\n<p>\u0422\u0430\u043a\u0436\u0435 \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0434\u043b\u044f HTTP-\u043a\u043b\u0438\u0435\u043d\u0442\u0430 Node.js undici \u0432\u0435\u0440\u0441\u0438\u0438 5.28.3, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-24758), \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u0430\u044f \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u043e\u0447\u0438\u0441\u0442\u043a\u0438 HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430 Proxy-Authorization \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60612\">opennet.ru<\/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 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 -.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sl\/blog\/news\/uyazvimosti-v-node-js-i-libuv\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"sl_SI\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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 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