{"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\/cs\/blog\/news\/uyazvimosti-v-node-js-i-libuv","title":{"rendered":"Zranitelnosti v Node.js a libuv","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dostupn\u00e9 jsou opravy serverov\u00e9 JavaScriptov\u00e9 platformy Node.js 21.6.2, 20.11.1, 18.19.1, ve kter\u00fdch bylo opraveno 8 zranitelnost\u00ed, z nich\u017e 4 maj\u00ed vysokou \u00farove\u0148 nebezpe\u010d\u00ed:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2024-21892 \u2014 mo\u017enost, \u017ee nep\u0159ihl\u00e1\u0161en\u00fd u\u017eivatel m\u016f\u017ee vlo\u017eit k\u00f3d, kter\u00fd d\u011bd\u00ed roz\u0161\u00ed\u0159en\u00e1 pr\u00e1va, s nimi\u017e se prov\u00e1d\u00ed pracovn\u00ed proces. Zranitelnost je zp\u016fsobena chybou v implementaci v\u00fdjimek, kter\u00e1 umo\u017e\u0148uje zpracov\u00e1vat prom\u011bnn\u00e9 prost\u0159ed\u00ed nastaven\u00e9 nep\u0159ihl\u00e1\u0161en\u00fdm u\u017eivatelem v procesu s roz\u0161\u00ed\u0159en\u00fdmi pr\u00e1vy. V\u00fdjimka m\u011bla b\u00fdt poskytov\u00e1na pouze pro opr\u00e1vn\u011bn\u00ed CAP_NET_BIND_SERVICE, ale kv\u016fli chyb\u011b se aplikovala i na n\u011bkter\u00e1 jin\u00e1 opr\u00e1vn\u011bn\u00ed (capabilities).\n<li class=\"l\"> CVE-2024-22019 \u2014 odm\u00edtnut\u00ed slu\u017eby prost\u0159ednictv\u00edm vy\u010derp\u00e1n\u00ed dostupn\u00fdch zdroj\u016f (zat\u00ed\u017een\u00ed CPU a spot\u0159eba \u0161\u00ed\u0159ky p\u00e1sma) p\u0159i zpracov\u00e1n\u00ed speci\u00e1ln\u011b form\u00e1tovan\u00fdch chunked po\u017eadavk\u016f vestav\u011bn\u00fdm HTTP serverem, co\u017e vede ke \u010dten\u00ed neomezen\u00e9ho mno\u017estv\u00ed bajt\u016f v jednom spojen\u00ed.\n<li class=\"l\"> CVE-2024-21896 \u2014 p\u0159ete\u010den\u00ed z\u00e1kladn\u00edho adres\u00e1\u0159e ve funk\u010dn\u00edch cest\u00e1ch. Zranitelnost umo\u017e\u0148uje obej\u00edt normalizaci cest k soubor\u016fm pomoc\u00ed path.resolve() v p\u0159\u00edpad\u011b, \u017ee je cesta p\u0159ed\u00e1na pomoc\u00ed t\u0159\u00eddy Buffer. Po proveden\u00ed kontroly se vol\u00e1 metoda Buffer.from(), ale ve aplikaci m\u016f\u017ee b\u00fdt pou\u017eit\u00ed vol\u00e1n\u00ed Buffer.prototype.utf8Write, co\u017e vede k nahrazen\u00ed obsahu po proveden\u00ed path.resolve() a vzniku zranitelnosti.\n<li class=\"l\"> CVE-2024-22017 \u2014 vol\u00e1n\u00ed setuid() neodstra\u0148ovalo v\u0161echna opr\u00e1vn\u011bn\u00ed. Zejm\u00e9na setuid() nem\u00e1 vliv na operace io_uring pou\u017e\u00edvan\u00e9 v libuv, pokud byly inicializov\u00e1ny p\u0159ed vol\u00e1n\u00edm setuid().\n<li class=\"l\"> CVE-2023-46809 \u2014 zranitelnost v API privateDecrypt(), kter\u00e1 umo\u017e\u0148uje prov\u00e9st \u00fatok Marvin pro de\u0161ifrov\u00e1n\u00ed RSA na z\u00e1klad\u011b m\u011b\u0159en\u00ed \u010dasu operac\u00ed.\n<li class=\"l\"> CVE-2024-21891 \u2014 mo\u017enost obej\u00edt model p\u0159\u00edstupov\u00fdch pr\u00e1v p\u0159i pou\u017eit\u00ed vlastn\u00edch zpracovatel\u016f normalizace cest k soubor\u016fm.\n<li class=\"l\"> CVE-2024-21890 \u2014 nespr\u00e1vn\u00e9 zpracov\u00e1n\u00ed masek v parametrech \"--allow-fs-read\" a \"--allow-fs-write\". Nap\u0159\u00edklad \"--allow-fs-read=\/home\/node\/.ssh\/*.pub\" povede k poskytnut\u00ed p\u0159\u00edstupu ke v\u0161emu obsahu \".ssh\/\", a ne pouze k soubor\u016fm s p\u0159\u00edponou \".pub\", proto\u017ee maska \"*\" je zpracov\u00e1v\u00e1na jako posledn\u00ed prvek cesty.\n<li class=\"l\"> CVE-2024-22025 \u2014 odm\u00edtnut\u00ed slu\u017eby prost\u0159ednictv\u00edm vy\u010derp\u00e1n\u00ed zdroj\u016f p\u0159i dek\u00f3dov\u00e1n\u00ed komprimovan\u00fdch dat ve form\u00e1tu Brotli, z\u00edskan\u00fdch prost\u0159ednictv\u00edm vol\u00e1n\u00ed fetch().          <\/ul>\n<p>Additionally, it is worth noting the release of libuv 1.48.0, used in Node.js for multiplexing connections and asynchronous I\/O processing. Besides Node.js, the library is also utilized by DNS servers BIND 9 and Knot DNS, HTTP server H2O, and the Lua framework Luvit.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/vps\/abuzoustojchivye-vps\/\"   title=\"virtu\u00e1ln\u00edm stroji\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4302\">virtu\u00e1ln\u00edm stroji<\/a> MoarVM, the Julia language, and the Python framework uvloop. The new version addresses a vulnerability (CVE-2024-24806) that manifests in projects using libuv, allowing SSRF (Server-side request forgery) attacks to gain access to internal APIs. The vulnerability arises from truncating the hostname by the function uv_getaddrinfo() to 256 characters before resolving the domain via getaddrinfo(), which may lead to identifying the wrong <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/lir\/ipv4\/\"   title=\"IP adres\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"665\">IP adres<\/a> a obe\u010den\u00ed kontrol. Nap\u0159\u00edklad servis typu MySpace, kter\u00fd vytv\u00e1\u0159\u00ed subdom\u00e9ny ve form\u00e1tu &#171;username.example.com&#187;, lze napadnout zad\u00e1n\u00edm dlouh\u00e9ho u\u017eivatelsk\u00e9ho jm\u00e9na.      <\/p>\n<p>An update to the HTTP client undici 5.28.3 used in Node.js has also been released, which fixes a vulnerability (CVE-2024-24758) caused by the lack of clearing the Proxy-Authorization HTTP header during request redirections.<br \/>\n<br \/>Zdroj: <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 5.0.3 - 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\/cs\/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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