{"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\/hu\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","title":{"rendered":"Hiba a RubyGems.org webhelyen, amely lehet\u0151v\u00e9 teszi m\u00e1s csomagok cser\u00e9j\u00e9t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A RubyGems.org csomag-repozitorium\u00e1ban kritikus sebezhet\u0151s\u00e9get (CVE-2022-29176) azonos\u00edtottak, amely lehet\u0151v\u00e9 teszi jogosults\u00e1gok n\u00e9lk\u00fcl, hogy egyes harmadik f\u00e9l csomagokat helyettes\u00edtsenek a repozitoriumban, ha egy legitim csomagot visszavonnak (yank), \u00e9s helyette egy ugyanolyan nev\u0171 \u00e9s verzi\u00f3j\u00fa f\u00e1jlt t\u00f6ltenek fel.      <\/p>\n<p>A sebezhet\u0151s\u00e9g sikeres kihaszn\u00e1l\u00e1s\u00e1hoz h\u00e1rom felt\u00e9tel teljes\u00edt\u00e9se sz\u00fcks\u00e9ges:  <\/p>\n<ul>\n<li class=\"l\"> A t\u00e1mad\u00e1s csak olyan csomagokra ir\u00e1nyulhat, amelyek nev\u00e9ben a k\u00f6t\u0151jel szerepel.\n<li class=\"l\"> A t\u00e1mad\u00f3nak lehet\u0151s\u00e9ge van olyan gem-csomagot elhelyezni, amelynek neve a k\u00f6t\u0151jelig terjed. P\u00e9ld\u00e1ul, ha a t\u00e1mad\u00e1s a \"rails-html-sanitizer\" csomagra ir\u00e1nyul, a t\u00e1mad\u00f3 a saj\u00e1t csomagj\u00e1t \"rails-html\" n\u00e9ven kell elhelyezze a t\u00e1rol\u00f3ban.\n<li class=\"l\"> A t\u00e1madott csomagnak az utols\u00f3 30 napon bel\u00fcl kellett l\u00e9trej\u00f6nnie, vagy az elm\u00falt 100 napon bel\u00fcl nem friss\u00fclt.  <\/ul>\n<p>A sebezhet\u0151s\u00e9g oka a \"yank\" m\u0171veletkezel\u0151ben rejl\u0151 hiba, amely a k\u00f6t\u0151jel ut\u00e1ni n\u00e9vr\u00e9szletet platformneveknek tekintette, lehet\u0151v\u00e9 t\u00e9ve ezzel m\u00e1s csomagok elt\u00e1vol\u00edt\u00e1s\u00e1t, amelyek az els\u0151 r\u00e9szben megegyeznek. K\u00fcl\u00f6n\u00f6sen a \"yank\" m\u0171veletkezel\u0151 k\u00f3dj\u00e1ban a csomagok keres\u00e9s\u00e9re a k\u00f6vetkez\u0151 h\u00edv\u00e1st haszn\u00e1lt\u00e1k: 'find_by!(full_name: \"#{rubygem.name}-#{slug}\")', mik\u00f6zben a \"slug\" param\u00e9tert a csomag tulajdonosa adta meg az elt\u00e1vol\u00edtand\u00f3 verzi\u00f3 meghat\u00e1roz\u00e1s\u00e1ra. A \"rails-html\" csomag tulajdonosa a \"1.2.3\" verzi\u00f3 helyett megadhatta a \"sanitizer-1.2.3\" -t, ami a \"rails-html-sanitizer-1.2.3\" csomagra vonatkoz\u00f3 m\u0171velet v\u00e9grehajt\u00e1s\u00e1hoz vezetett.      <\/p>\n<p>A probl\u00e9m\u00e1t egy biztons\u00e1gi kutat\u00f3 az HackerOne-on foly\u00f3 bug bounty program keretein bel\u00fcl azonos\u00edtotta, amely a biztons\u00e1gi probl\u00e9m\u00e1k keres\u00e9s\u00e9re ir\u00e1nyul a neves ny\u00edlt projekteken. A probl\u00e9m\u00e1t a RubyGems.org-on  m\u00e1jus 5-\u00e9n jav\u00edtott\u00e1k, \u00e9s a fejleszt\u0151k nyilatkozata szerint m\u00e9g nem tal\u00e1ltak nyomait a sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1s\u00e1nak az elm\u00falt 18 h\u00f3nap napl\u00f3iban. Jelenleg csak fel\u00fcletes ellen\u0151rz\u00e9st v\u00e9geztek, \u00e9s tov\u00e1bbi alapos vizsg\u00e1latokat terveznek.     <\/p>\n<p>A projektek ellen\u0151rz\u00e9s\u00e9hez aj\u00e1nlott elemezni a Gemfile.lock f\u00e1jlban tal\u00e1lhat\u00f3 m\u0171veletek t\u00f6rt\u00e9net\u00e9t; a rosszindulat\u00fa tev\u00e9kenys\u00e9g a n\u00e9v \u00e9s verzi\u00f3 meg\u0151rz\u00e9s\u00e9vel vagy a platform megv\u00e1ltoztat\u00e1s\u00e1val fejez\u0151dik ki (p\u00e9ld\u00e1ul amikor a gemname-1.2.3 csomag friss\u00edtve lett gemname-1.2.3-java-ra). A csomagok rejtett cser\u00e9j\u00e9nek v\u00e9delme \u00e9rdek\u00e9ben a folyamatos integr\u00e1ci\u00f3s rendszerekben vagy a projektek k\u00f6zz\u00e9t\u00e9tel\u00e9n\u00e9l a fejleszt\u0151knek aj\u00e1nlott a Bundler haszn\u00e1lata az \"--frozen\" vagy \"--deployment\" opci\u00f3kkal a f\u00fcgg\u0151s\u00e9gek r\u00f6gz\u00edt\u00e9s\u00e9hez.<br \/>\n<br \/>Forr\u00e1s: <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 5.0.3 - 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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s\u00e9r\u00fcl\u00e9kenys\u00e9get (CVE-2022-29176) fedeztek fel, amely lehet\u0151v\u00e9 teszi, hogy jogosulatlanul m\u00e1s csomagokat felv\u00e1ltsanak a repository-ban kit\u00e9tel kezdem\u00e9nyez\u00e9s\u00e9vel (yank).","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-rubygems-org-pozvolyayushhaya-podmenit-chuzhie-pakety","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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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\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 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