{"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\/ro\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","title":{"rendered":"Vulnerabilitate \u00een RubyGems.org care permite substituirea pachetelor str\u0103ine","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>O vulnerabilitate critic\u0103 a fost descoperit\u0103 \u00een depozitul de pachete RubyGems.org (CVE-2022-29176), care permite, f\u0103r\u0103 autorizare adecvat\u0103, \u00eenlocuirea unor pachete externe din depozit prin ini\u021bierea retragerii (yank) unui pachet legitim \u0219i \u00eenc\u0103rcarea \u00een locul acestuia a unui alt fi\u0219ier cu acela\u0219i nume \u0219i num\u0103r de versiune.      <\/p>\n<p>Pentru exploatarea cu succes a vulnerabilit\u0103\u021bii, sunt necesare \u00eendeplinirea a trei condi\u021bii:  <\/p>\n<ul>\n<li class=\"l\"> Atacul poate fi efectuat doar asupra pachetelor a c\u0103ror nume con\u021bin simbolul cratimei.\n<li class=\"l\"> Un atacator ar trebui s\u0103 aib\u0103 capacitatea de a plasa un pachet gem cu o parte a numelui \u00eenainte de simbolul cratimei. De exemplu, dac\u0103 atacul se desf\u0103\u0219oar\u0103 asupra pachetului &#171;rails-html-sanitizer&#187;, atacatorul ar trebui s\u0103 plaseze \u00een repositoriu propriul pachet &#171;rails-html&#187;.\n<li class=\"l\"> Pachetul vizat de atac trebuie s\u0103 fi fost creat \u00een ultimele 30 de zile sau s\u0103 nu fi fost actualizat \u00een ultimele 100 de zile.  <\/ul>\n<p>Vulnerabilitatea este cauzat\u0103 de o eroare \u00een handlerul ac\u021biunii &#171;yank&#187;, care interpreteaz\u0103 partea numelui dup\u0103 cratim\u0103 ca numele platformei, permi\u021b\u00e2nd ini\u021bierea \u0219tergerii pachetelor altora care se potrivesc cu partea numelui dinaintea simbolului cratimei. \u00cen special, \u00een codul handlerului pentru ac\u021biunea &#171;yank&#187;, pentru c\u0103utarea pachetelor se folosea apelul &#8216;find_by!(full_name: &#171;#{rubygem.name}-#{slug}&#187;)&#8217;, av\u00e2nd \u00een vedere c\u0103 parametrul &#171;slug&#187; era transmis de proprietarul pachetului pentru a determina versiunea ce urma a fi \u0219tears\u0103. Proprietarul pachetului &#171;rails-html&#187; putea indica, \u00een loc de versiunea &#171;1.2.3&#187;, &#171;sanitizer-1.2.3&#187;, ceea ce ar fi dus la aplicarea opera\u021biei asupra unui alt pachet &#171;rails-html-sanitizer-1.2.3&#187;.      <\/p>\n<p>Problema a fost identificat\u0103 de un cercet\u0103tor \u00een domeniul securit\u0103\u021bii \u00een cadrul unei programe active de recompense pe HackerOne pentru descoperirea problemelor de securitate \u00een proiecte open-source cunoscute. Problema a fost remediat\u0103 \u00een RubyGems.org pe 5 mai \u0219i, conform declara\u021biilor dezvoltatorilor, p\u00e2n\u0103 acum nu au identificat urme de exploatare a vulnerabilit\u0103\u021bii \u00een jurnalele din ultimele 18 luni. Cu toate acestea, un audit superficial a fost realizat p\u00e2n\u0103 acum \u0219i se preconizeaz\u0103 efectuarea unei verific\u0103ri mai am\u0103nun\u021bite \u00een continuare.     <\/p>\n<p>Pentru verificarea proiectelor, se recomand\u0103 analiza istoricului opera\u021biunilor din fi\u0219ierul Gemfile.lock, activitatea d\u0103un\u0103toare fiind exprimat\u0103 prin modific\u0103ri men\u021bin\u00e2nd numele \u0219i versiunea sau schimbarea platformei (de exemplu, c\u00e2nd pachetul gemname-1.2.3 a fost actualizat la gemname-1.2.3-java). Ca metod\u0103 de ocolire pentru protec\u021bia \u00eempotriva modific\u0103rii ascunse a pachetelor \u00een sistemele de integrare continu\u0103 sau atunci c\u00e2nd se public\u0103 proiecte, dezvoltatorilor li se recomand\u0103 utilizarea Bundler cu op\u021biunile &#171;&#8212;frozen&#187; sau &#171;&#8212;deployment&#187; pentru a fixa dependen\u021bele.<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57155\">opennet.ro<\/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 5.0.2.1 - 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 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(CVE-2022-29176), care permite, f\u0103r\u0103 autorizare adecvat\u0103, \u00eenlocuirea unor pachete str\u0103ine din repository prin ini\u021bierea unei ac\u021biuni de retractare (yank).","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","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\u044c \u0432 RubyGems.org, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f 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