{"id":101180,"date":"2021-09-02T22:22:53","date_gmt":"2021-09-02T20:22:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-npm-pakete-pac-resolver-naschityvayushhem-3-mln-zagruzok-v-nedelyu"},"modified":"2021-09-02T22:22:53","modified_gmt":"2021-09-02T20:22:54","slug":"uyazvimost-v-npm-pakete-pac-resolver-naschityvayushhem-3-mln-zagruzok-v-nedelyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-npm-pakete-pac-resolver-naschityvayushhem-3-mln-zagruzok-v-nedelyu","title":{"rendered":"Tipphetk NPM-paketis pac-resolver, millel on 3 miljonit allalaadimist n\u00e4dalas","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>NPM-pakendis pac-resolver, millel on \u00fcle 3 miljoni n\u00e4dalas laadimise, tuvastati haavatavus (CVE-2021-23406), mis v\u00f5imaldab JavaScript-koodi t\u00e4itmist rakenduse kontekstis, kui saadetakse HTTP-p\u00e4ringud Node.js-projektidest, mis toetavad automaatse proxy-seadmise funktsiooni.     <\/p>\n<p>Pac-resolver pakett anal\u00fc\u00fcsib PAC-faile, mis sisaldavad automaatse proxy-seadmise skripti. PAC-fail sisaldab tavalist JavaScript-koodi, milles on funktsioon FindProxyForURL, mis m\u00e4\u00e4rab proxy valimise loogika s\u00f5ltuvalt hostist ja k\u00fcsitud URL-ist. Haavatavuse tuum seisneb selles, et pac-resolveris esitati JavaScript-kood, kasutades Node.js API VM-i, mis v\u00f5imaldab JavaScripti koodi t\u00e4itmist V8 mootori teises kontekstis.     <\/p>\n<p>Antud API on dokumentatsioonis selgelt m\u00e4rgitud kui mitte usaldusv\u00e4\u00e4rse koodi k\u00e4itamiseks mitte m\u00f5eldud, kuna see ei paku t\u00e4isv\u00e4\u00e4rtuslikku k\u00e4ivitatava koodi isoleerimist ning lubab ligip\u00e4\u00e4su algsele kontekstile. Probleem lahendati pac-resolver 5.0.0 v\u00e4ljalaskmisel, mis on \u00fcmber viidud vm2 raamatukogu kasutamisele, mis pakub k\u00f5rgemat isoleerimisastet, mis sobib usaldamatute koodide k\u00e4itamiseks.      <center><img decoding=\"async\" alt=\"Tipphetk NPM-paketis pac-resolver, millel on 3 miljonit allalaadimist n\u00e4dalas\" src=\"\/wp-content\/uploads\/2021\/09\/3c16ba59e1b3371e326a44486d8332df.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Haavatava pac-resolver'i versiooni kasutamisel v\u00f5ib r\u00fcndaja, edastades spetsiaalset vormindatud PAC-faili, saavutada oma JavaScript-koodi k\u00e4itamise projekti koodi kontekstis, mis kasutab Node.js-i, kui selles projektis on raamatukogusid, mis s\u00f5ltuvad pac-resolver'ist. Problemaatilisest raamatukogust k\u00f5ige populaarsem on Proxy-Agent, mis on s\u00f5ltuvustes 360 projektis, sealhulgas urllib, aws-cdk, mailgun.js ja firebase-tools, mis kokku annavad \u00fcle kolme miljoni allalaadimise n\u00e4dalas.     <\/p>\n<p>Kui rakendus, mis on seotud pac-resolveriga, laadib WPAD-protokolliga varustatud s\u00fcsteemi pakutud PAC-faili, saavad kohalikku v\u00f5rku p\u00e4\u00e4sevad kurjategijad kasutada DHCP kaudu edastatavaid proxy-seadeid, et asendada pahatahtlikud PAC-failid.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55728\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 NPM-\u043f\u0430\u043a\u0435\u0442\u0435 pac-resolver, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 3 \u043c\u043b\u043d \u0437\u0430\u0433\u0440\u0443\u0437\u043e\u043a \u0432 \u043d\u0435\u0434\u0435\u043b\u044e, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-23406), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430 \u0432 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0438\u0437 Node.js-\u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0430\u0432\u0442\u043e\u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u041f\u0430\u043a\u0435\u0442 pac-resolver \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442 \u0440\u0430\u0437\u0431\u043e\u0440 PAC-\u0444\u0430\u0439\u043b\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0445 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. PAC-\u0444\u0430\u0439\u043b \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u043e\u0431\u044b\u0447\u043d\u044b\u0439 JavaScript-\u043a\u043e\u0434 \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 FindProxyForURL, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u0443 \u0432\u044b\u0431\u043e\u0440\u0430 \u043f\u0440\u043e\u043a\u0441\u0438 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101181,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 NPM-\u043f\u0430\u043a\u0435\u0442\u0435 pac-resolver, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 3 \u043c\u043b\u043d \u0437\u0430\u0433\u0440\u0443\u0437\u043e\u043a \u0432 \u043d\u0435\u0434\u0435\u043b\u044e, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-23406), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430 \u0432 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0438\u0437 Node.js-\u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0430\u0432\u0442\u043e\u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u041f\u0430\u043a\u0435\u0442 pac-resolver \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442 \u0440\u0430\u0437\u0431\u043e\u0440 PAC-\u0444\u0430\u0439\u043b\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0445 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. PAC-\u0444\u0430\u0439\u043b \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u043e\u0431\u044b\u0447\u043d\u044b\u0439 JavaScript-\u043a\u043e\u0434 \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 FindProxyForURL, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u0443 \u0432\u044b\u0431\u043e\u0440\u0430 \u043f\u0440\u043e\u043a\u0441\u0438 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442\" \/>\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\/et\/blog\/novosti-interneta\/uyazvimost-v-npm-pakete-pac-resolver-naschityvayushhem-3-mln-zagruzok-v-nedelyu\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"et_EE\" \/>\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 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 NPM-\u043f\u0430\u043a\u0435\u0442\u0435 pac-resolver, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c 3 \u043c\u043b\u043d \u0437\u0430\u0433\u0440\u0443\u0437\u043e\u043a \u0432 \u043d\u0435\u0434\u0435\u043b\u044e | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 NPM-\u043f\u0430\u043a\u0435\u0442\u0435 pac-resolver, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 3 \u043c\u043b\u043d \u0437\u0430\u0433\u0440\u0443\u0437\u043e\u043a \u0432 \u043d\u0435\u0434\u0435\u043b\u044e, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-23406), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430 \u0432 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0438\u0437 Node.js-\u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0430\u0432\u0442\u043e\u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u041f\u0430\u043a\u0435\u0442 pac-resolver \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442 \u0440\u0430\u0437\u0431\u043e\u0440 PAC-\u0444\u0430\u0439\u043b\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0445 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430. PAC-\u0444\u0430\u0439\u043b \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u043e\u0431\u044b\u0447\u043d\u044b\u0439 JavaScript-\u043a\u043e\u0434 \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 FindProxyForURL, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u0443 \u0432\u044b\u0431\u043e\u0440\u0430 \u043f\u0440\u043e\u043a\u0441\u0438 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-npm-pakete-pac-resolver-naschityvayushhem-3-mln-zagruzok-v-nedelyu\" \/>\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 property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-09-02T20:22:54+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-09-02T20:22:54+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Haavatavus NPM-paketis pac-resolver, millel on 3 miljonit allalaadimist n\u00e4dalas | ProHoster","description":"NPM-paketis pac-resolver, millel on \u00fcle 3 miljoni allalaadimise n\u00e4dalas, leiti haavatavus (CVE-2021-23406), mis v\u00f5imaldab JavaScripti koodi t\u00e4itmist rakenduse kontekstis, kui HTTP-p\u00e4ringud tehdakse Node.js projektidest, mis toetavad proxy-seadete automaatset konfigureerimist. Paketis pac-resolver t\u00f5lgitakse PAC-faile, mis sisaldavad automaatse proxy-seadistamise skripti. 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