{"id":105214,"date":"2022-09-29T15:36:37","date_gmt":"2022-09-29T13:36:37","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah"},"modified":"2022-09-29T15:36:37","modified_gmt":"2022-09-29T13:36:37","slug":"kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah","title":{"rendered":"Kriitilised haavatavused, mis ohustavad l\u00f5puni kr\u00fcpteerimist paljudes Matrixi klientides","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Decentraliseeritud suhtlusplatvormi Matrix arendajad teatasid kriitiliste haavatavuste tuvastamisest matrix-js-sdk, matrix-ios-sdk ja matrix-android-sdk2 raamatukogudes, mis v\u00f5imaldavad serveriadministraatoritel esineda teiste kasutajatena ja lugeda l\u00f5pp-punkti kr\u00fcpteeritud (E2EE) vestlusi. Haavatavused tulenevad vigadest Matrix protokolli erinevates rakendustes ja ei ole protokolli endaga seotud probleemid. Praegu on projekt v\u00e4lja andnud uuendused probleemsete SDK-de ja nende alusel loodud kliendirakenduste jaoks.    <\/p>\n<p>Eduka r\u00fcnnaku toimumiseks on vajalik juurdep\u00e4\u00e4s kurjategijate kontrollitavale koduserverile <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/dts-shicago\/\"   title=\"serverile\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2922\">serverile<\/a> (homeserver &#8212; kliendi ajaloo ja kontode haldamise server). Kliendipoolsest l\u00f5pp-otsast kr\u00fcpteerimise rakendamine ei v\u00f5imalda administraatoril <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/dts-los-angeles\/\"   title=\"serverid\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3857\">serverid<\/a> kuuluda vestlusesse, kuid tuvastatud haavatavused v\u00f5imaldavad selle kaitse m\u00f6\u00f6da hiilida. Probleemid m\u00f5jutavad peamist Matrix-kliendi Element (endine Riot) Web, lauaarvutite s\u00fcsteemide, iOS-i ja Androidi jaoks, samuti kolmandate osapoolte klientrakendusi, sealhulgas Cinny, Beeper, SchildiChat, Circuli ja Synod.im. Haavatavused ei esine teekides matrix-rust-sdk, hydrogen-sdk, Matrix Dart SDK, mautrix-python, mautrix-go ja matrix-nio, samuti rakendustes Hydrogen, ElementX, Nheko, FluffyChat, Syphon, Timmy, Gomuks ja Pantalaimon.      <\/p>\n<p>Toodud on kolm peamist r\u00fcnnakuskeemide stsenaariumi:  <\/p>\n<ul>\n<li class=\"l\"> Matrix-serveri administraator v\u00f5ib rikkuda emoji p\u00f5hjalikku autentimist (SAS, Short Authentication Strings), kasutades ristallkirju ja esineda teise kasutajana. Probleem tuleneb haavatavusest (CVE-2022-39250) matrix-js-sdk koodis, mis on seotud seadmete identifikaatorite ja ristallkirjade v\u00f5tmete segamisega.\n<li class=\"l\"> Serveri t\u00f6\u00f6d kontrolliv r\u00fcndaja v\u00f5ib vale saatja, kellele v\u00f5idakse usaldada, ja edastada vale v\u00f5tme, et j\u00e4\u00e4dvustada s\u00f5numeid teistelt kasutajatelt. Probleem tuleneb haavatavusest matrix-js-sdk (CVE-2022-39251), matrix-ios-sdk (CVE-2022-39255) ja matrix-android-sdk2 (CVE-2022-39248), mis viis selleni, et klient oli valeandmete t\u00f5ttu mitte\u00f5igesti vastuv\u00f5tmas seadmetele adresseeritud s\u00f5numeid, mis on kr\u00fcpteeritud Megolm protokolli abil, mitte Olm'i abil, omistades s\u00f5numid Megolm saatjale, mitte tegelikule saatjale.\n<li class=\"l\"> Kasutades eelnevalt mainitud haavatavusi, v\u00f5ib serveri administraator lisada ka vale varuv\u00f5tme kasutajakontole, et hankida v\u00f5tmeid, mida kasutatakse s\u00f5numite kr\u00fcpteerimiseks.    <\/ul>\n<p>Haavatavusi avastanud teadlased demonstreerisid ka r\u00fcnnakuid, mis v\u00f5ivad viia kolmanda osapoole lisamiseni vestlusesse v\u00f5i kellegi teise seadme sidumiseni kasutajaga. R\u00fcnnakud p\u00f5hinevad asjaolul, et teenuseteated, mida kasutatakse kasutajate vestlusse lisamiseks, ei ole seotud vestluse looja v\u00f5tmete ja neid saab genereerida serveri administratiivt\u00f6\u00f6taja. Matrixi projekti arendajad klassifitseerisid need haavatavused v\u00e4ikesteks, kuna sellised manipulatsioonid ei j\u00e4\u00e4 m\u00e4rkamatuks \u2014 kui kasutaja on asendatud, kuvatakse ta vestluse kasutajate loendis ja seadme lisamise korral v\u00e4ljastatakse hoiatusteade, ning seade m\u00e4rgitakse kontrollimata (kuid kohe p\u00e4rast seadme lisamist hakkavad jagatud v\u00f5tmed edastama, mis on vajalikud s\u00f5numite dekr\u00fcpteerimiseks).<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57844\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&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-105214","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 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paljude Matrixi klientide l\u00f5pp-punktide kr\u00fcpteerimist | ProHoster","description":"Detsember keskkonnaga Matrix arendajad teatasid, et on avastatud kriitilised haavatavused matrix-js-sdk, matrix-ios-sdk ja matrix-android-sdk2 teegis, mis v\u00f5imaldavad serveri administraatoritel.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/kriticheskie-uyazvimosti-komprometiruyushhie-skvoznoe-shifrovanie-vo-mnogih-matrix-klientah","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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 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