V\u00fdvoj\u00e1\u0159i platformy decentralizovan\u00fdch komunikac\u00ed Matrix varovali o zji\u0161t\u011bn\u00fdch kritick\u00fdch zranitelnostech v knihovn\u00e1ch matrix-js-sdk, matrix-ios-sdk a matrix-android-sdk2, kter\u00e9 umo\u017e\u0148uj\u00ed spr\u00e1vc\u016fm server\u016f vyd\u00e1vat se za jin\u00e9 u\u017eivatele a \u010d\u00edst zpr\u00e1vy v chatech s end-to-end \u0161ifrov\u00e1n\u00edm (E2EE). Zranitelnosti jsou zp\u016fsobeny chybami v jednotliv\u00fdch implementac\u00edch protokolu Matrix a nejsou probl\u00e9mem samotn\u00e9ho protokolu. V sou\u010dasn\u00e9 dob\u011b vydal projekt aktualizace problematick\u00fdch SDK a \u010d\u00e1sti klientsk\u00fdch aplikac\u00ed, kter\u00e9 na nich byly postaveny. <\/p>\n
Pro \u00fasp\u011b\u0161n\u00e9 proveden\u00ed \u00fatoku je pot\u0159eba kontaktovat dom\u00e1c\u00ed server pod kontrolou \u00fato\u010dn\u00edka serveru<\/a> (homeserver \u2014 server pro ukl\u00e1d\u00e1n\u00ed historie a \u00fa\u010dt\u016f z\u00e1kazn\u00edk\u016f). Pou\u017eit\u00ed end-to-end \u0161ifrov\u00e1n\u00ed na stran\u011b klienta zabra\u0148uje administr\u00e1torovi serveru<\/a> zasahovat do v\u00fdm\u011bny zpr\u00e1v, av\u0161ak zji\u0161t\u011bn\u00e9 zranitelnosti umo\u017e\u0148uj\u00ed obch\u00e1zet tuto ochranu. Probl\u00e9my se t\u00fdkaj\u00ed hlavn\u00edho Matrix klienta Element (d\u0159\u00edve Riot) pro Web, desktopov\u00e9 syst\u00e9my, iOS a Android, stejn\u011b jako t\u0159et\u00edch stran klientsk\u00e9 aplikace, v\u010detn\u011b Cinny, Beeper, SchildiChat, Circuli a Synod.im. Zranitelnosti se neprojevuj\u00ed v knihovn\u00e1ch matrix-rust-sdk, hydrogen-sdk, Matrix Dart SDK, mautrix-python, mautrix-go a matrix-nio, stejn\u011b tak v aplikac\u00edch Hydrogen, ElementX, Nheko, FluffyChat, Syphon, Timmy, Gomuks a Pantalaimon. <\/p>\n Vyb\u00edraj\u00ed se t\u0159i hlavn\u00ed sc\u00e9n\u00e1\u0159e proveden\u00ed \u00fatoku: <\/p>\n V\u00fdzkumn\u00edci, kte\u0159\u00ed odhalili zranitelnost, tak\u00e9 uk\u00e1zali \u00fatoky vedouc\u00ed k p\u0159id\u00e1n\u00ed neopr\u00e1vn\u011bn\u00e9ho u\u017eivatele do chatu nebo p\u0159ipojen\u00ed ciz\u00edho za\u0159\u00edzen\u00ed k u\u017eivatelsk\u00e9mu \u00fa\u010dtu. \u00datoky jsou zalo\u017eeny na tom, \u017ee syst\u00e9mov\u00e9 zpr\u00e1vy pou\u017e\u00edvan\u00e9 k p\u0159id\u00e1n\u00ed u\u017eivatel\u016f do chatu nejsou v\u00e1z\u00e1ny na kl\u00ed\u010de zakladatele chatu a mohou b\u00fdt generov\u00e1ny administr\u00e1torem serveru. V\u00fdvoj\u00e1\u0159i z projektu Matrix tyto zranitelnosti klasifikovali jako m\u00e9n\u011b v\u00fdznamn\u00e9, proto\u017ee podobn\u00e9 manipulace nez\u016fstanou bez pov\u0161imnut\u00ed \u2014 p\u0159i substituci u\u017eivatele bude zobrazen v seznamu u\u017eivatel\u016f chatu a p\u0159i p\u0159id\u00e1n\u00ed za\u0159\u00edzen\u00ed se zobraz\u00ed upozorn\u011bn\u00ed, a za\u0159\u00edzen\u00ed bude ozna\u010deno jako neov\u011b\u0159en\u00e9 (p\u0159i\u010dem\u017e ihned po p\u0159id\u00e1n\u00ed podvr\u017een\u00e9mu za\u0159\u00edzen\u00ed za\u010dnou b\u00fdt p\u0159en\u00e1\u0161eny sd\u00edlen\u00e9 kl\u00ed\u010de nezbytn\u00e9 pro de\u0161ifrov\u00e1n\u00ed zpr\u00e1v). \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043c\u043c\u0443\u043d\u0438\u043a\u0430\u0446\u0438\u0439 Matrix \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0438 \u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0438 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 matrix-js-sdk, matrix-ios-sdk \u0438 matrix-android-sdk2, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 \u0432\u044b\u0434\u0430\u0432\u0430\u0442\u044c \u0441\u0435\u0431\u044f \u0437\u0430 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438 \u0447\u0438\u0442\u0430\u0442\u044c \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f \u0432 \u0447\u0430\u0442\u0430\u0445 \u0441\u043e \u0441\u043a\u0432\u043e\u0437\u043d\u044b\u043c \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c (E2EE). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432\u044b\u0437\u0432\u0430\u043d\u044b \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 Matrix \u0438 \u043d\u0435 \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430\u043c\u0438 \u0441\u0430\u043c\u043e\u0433\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f, \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u044b \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 SDK […]<\/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-105214","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Kritick\u00e9 zranitelnosti ohro\u017euj\u00edc\u00ed \u0161ifrov\u00e1n\u00ed end-to-end v mnoha klient\u00edch Matrix | ProHoster","description":"V\u00fdvoj\u00e1\u0159i platformy decentralizovan\u00fdch komunikac\u00ed Matrix varovali p\u0159ed odhalen\u00edm kritick\u00fdch zranitelnost\u00ed v knihovn\u00e1ch matrix-js-sdk, matrix-ios-sdk a matrix-android-sdk2, kter\u00e9 umo\u017e\u0148uj\u00ed spr\u00e1vc\u016fm server\u016f.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","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\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0441\u043a\u0432\u043e\u0437\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u043e \u043c\u043d\u043e\u0433\u0438\u0445 Matrix-\u043a\u043b\u0438\u0435\u043d\u0442\u0430\u0445 | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043c\u043c\u0443\u043d\u0438\u043a\u0430\u0446\u0438\u0439 Matrix \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0438 \u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0438 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 matrix-js-sdk, matrix-ios-sdk \u0438 matrix-android-sdk2, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432.","og:url":"https:\/\/prohoster.info\/cs\/blog\/news\/kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-09-29T13:36:37+00:00","article:modified_time":"2022-09-29T13:36:37+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"105214","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 21:42:04","updated":"2026-02-22 15:31:01","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/105214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/comments?post=105214"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/105214\/revisions"}],"predecessor-version":[{"id":162385,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/105214\/revisions\/162385"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media?parent=105214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/categories?post=105214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/tags?post=105214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"