{"id":103981,"date":"2022-05-09T09:36:45","date_gmt":"2022-05-09T07:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety"},"modified":"2022-05-09T09:36:45","modified_gmt":"2022-05-09T07:36:45","slug":"uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","title":{"rendered":"Zranite\u013enos\u0165 v RubyGems.org, ktor\u00e1 umo\u017e\u0148uje nahradenie cudz\u00edch bal\u00edkov","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V repozit\u00e1ri bal\u00edkov RubyGems.org bola zisten\u00e1 kritick\u00e1 zranite\u013enos\u0165 (CVE-2022-29176), ktor\u00e1 umo\u017e\u0148uje bez patri\u010dn\u00fdch opr\u00e1vnen\u00ed nahradi\u0165 niektor\u00e9 cudzie bal\u00edky v repozit\u00e1ri iniciovan\u00edm vymazania (yank) legit\u00edmneho bal\u00edka a nahraden\u00edm in\u00fdm s\u00faborom so rovnak\u00fdm n\u00e1zvom a \u010d\u00edslom verzie.      <\/p>\n<p>Na \u00faspe\u0161n\u00e9 zneu\u017eitie zranite\u013enosti je potrebn\u00e9 splni\u0165 tri podmienky:  <\/p>\n<ul>\n<li class=\"l\"> \u00datok mo\u017eno vykona\u0165 len na bal\u00edky, v ktor\u00fdch n\u00e1zve sa pou\u017e\u00edva symbol poml\u010dky.\n<li class=\"l\"> \u00dato\u010dn\u00edk by mal ma\u0165 mo\u017enos\u0165 umiestni\u0165 gem bal\u00edk s \u010das\u0165ou n\u00e1zvu pred poml\u010dku. Napr\u00edklad, ak je \u00fatok zameran\u00fd na bal\u00edk &#171;rails-html-sanitizer&#187;, \u00fato\u010dn\u00edk by mal umiestni\u0165 v repozit\u00e1ri svoj vlastn\u00fd bal\u00edk &#171;rails-html&#187;.\n<li class=\"l\"> Bal\u00edk, na ktor\u00fd sa \u00fato\u010d\u00ed, mus\u00ed by\u0165 vytvoren\u00fd v posledn\u00fdch 30 d\u0148och alebo nebol aktualizovan\u00fd po\u010das 100 dn\u00ed.  <\/ul>\n<p>Zranite\u013enos\u0165 je sp\u00f4soben\u00e1 chybou v spracovate\u013eovi akcie &#171;yank&#187;, ktor\u00fd interpretuje \u010das\u0165 n\u00e1zvu za poml\u010dkou ako n\u00e1zov platformy, \u010do umo\u017enilo iniciova\u0165 odstr\u00e1nenie cudz\u00edch bal\u00edkov, ktor\u00e9 sa zhoduj\u00fa v \u010dasti n\u00e1zvu pred poml\u010dkou. V konkr\u00e9tnom pr\u00edpade sa v k\u00f3de spracovate\u013ea oper\u00e1cie &#171;yank&#187; na vyh\u013ead\u00e1vanie bal\u00edkov pou\u017e\u00edval volanie &#8216;find_by!(full_name: &#171;#{rubygem.name}-#{slug}&#187;)&#8217;, pri\u010dom parameter &#171;slug&#187; bol posielan\u00fd vlastn\u00edkom bal\u00edka na ur\u010denie verzie, ktor\u00e1 m\u00e1 by\u0165 odstr\u00e1nen\u00e1. Majite\u013e bal\u00edka &#171;rails-html&#187; namiesto verzie &#171;1.2.3&#187; mohol uvies\u0165 &#171;sanitizer-1.2.3&#187;, \u010do by viedlo k aplik\u00e1cii oper\u00e1cie na cudz\u00ed bal\u00edk &#171;rails-html-sanitizer-1.2.3&#187;.      <\/p>\n<p>Probl\u00e9m bol identifikovan\u00fd bezpe\u010dnostn\u00fdm v\u00fdskumn\u00edkom v r\u00e1mci prebiehaj\u00faceho programu odmien na HackerOne za hl\u00e1senie probl\u00e9mov so zabezpe\u010den\u00edm v zn\u00e1mych otvoren\u00fdch projektoch. Probl\u00e9m bol odstr\u00e1nen\u00fd na RubyGems.org 5. m\u00e1ja a pod\u013ea vyhl\u00e1senia v\u00fdvoj\u00e1rov zatia\u013e nezistili \u017eiadne stopy po zneu\u017eit\u00ed zranite\u013enosti v protokoloch za posledn\u00fdch 18 mesiacov. Pri tom bol zatia\u013e vykonan\u00fd len povrchn\u00fd audit a v bud\u00facnosti sa pl\u00e1nuje vykona\u0165 h\u013abkov\u00e1 kontrola.     <\/p>\n<p>Pre kontrolu svojich projektov sa odpor\u00fa\u010da analyzova\u0165 hist\u00f3riu oper\u00e1ci\u00ed v s\u00fabore Gemfile.lock, kde sa \u0161kodliv\u00e1 aktivita prejavuje pr\u00edtomnos\u0165ou zmien s uchovan\u00edm n\u00e1zvu a verzie alebo zmenou platformy (napr\u00edklad, ke\u010f bol bal\u00edk gemname-1.2.3 aktualizovan\u00fd na gemname-1.2.3-java). Ako obch\u00e1dzaj\u00facu met\u00f3du ochrany pred skrytou v\u00fdmenou bal\u00edkov v syst\u00e9moch kontinu\u00e1lnej integr\u00e1cie alebo pri publikovan\u00ed projektov sa v\u00fdvoj\u00e1rom odpor\u00fa\u010da pou\u017e\u00edva\u0165 Bundler s mo\u017enos\u0165ami &#171;&#8212;frozen&#187; alebo &#171;&#8212;deployment&#187; na fix\u00e1ciu z\u00e1vislost\u00ed.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57155\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 RubyGems.org \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-29176), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0431\u0435\u0437 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u044b\u0445 \u043f\u043e\u043b\u043d\u043e\u043c\u043e\u0447\u0438\u0439 \u043f\u043e\u0434\u043c\u0435\u043d\u0438\u0442\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0447\u0443\u0436\u0438\u0435 \u043f\u0430\u043a\u0435\u0442\u044b \u0432 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043f\u0443\u0442\u0451\u043c \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u044a\u044f\u0442\u0438\u044f (yank) \u043b\u0435\u0433\u0438\u0442\u0438\u043c\u043d\u043e\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u0430 \u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0432\u043c\u0435\u0441\u0442\u043e \u043d\u0435\u0433\u043e \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430 \u0441 \u0442\u0435\u043c \u0436\u0435 \u0438\u043c\u0435\u043d\u0435\u043c \u0438 \u043d\u043e\u043c\u0435\u0440\u043e\u043c \u0432\u0435\u0440\u0441\u0438\u0438. \u0414\u043b\u044f \u0443\u0441\u043f\u0435\u0448\u043d\u043e\u0439 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0442\u0440\u0451\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u0439: \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u043f\u0430\u043a\u0435\u0442\u044b, \u0432 \u0438\u043c\u0435\u043d\u0438 [&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-103981","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 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 RubyGems.org \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-29176), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0431\u0435\u0437 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u044b\u0445 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zranite\u013enos\u0165 (CVE-2022-29176), ktor\u00e1 umo\u017e\u0148uje bez n\u00e1le\u017eit\u00fdch opr\u00e1vnen\u00ed podvrhn\u00fa\u0165 niektor\u00e9 cudzie bal\u00edky v repozit\u00e1ri iniciovan\u00edm ich stiahnutia (yank).","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","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 RubyGems.org, 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