{"id":37292,"date":"2019-10-31T22:16:49","date_gmt":"2019-10-31T19:16:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-webmin-najden-bekdor-pozvolyayushhij-udalyonno-poluchit-dostup-s-pravami-root\/"},"modified":"2019-10-31T22:16:49","modified_gmt":"2019-10-31T19:16:49","slug":"v-webmin-najden-bekdor-pozvolyayushhij-udalyonno-poluchit-dostup-s-pravami-root","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/v-webmin-najden-bekdor-pozvolyayushhij-udalyonno-poluchit-dostup-s-pravami-root","title":{"rendered":"Webminis leitud tagauks, mis v\u00f5imaldab kaugp\u00e4\u00e4su root-\u00f5igustega","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pakett Webmin<\/a><\/noindex>, mis pakub vahendeid serveri kaugjuhtimiseks, tuvastati<\/a><\/noindex> tagauks (CVE-2019-15107<\/a><\/noindex>), mis avastati projekti ametlikest kogumitest, mis levivad<\/a><\/noindex> Sourceforge'i kaudu ja on soovitatavad<\/a><\/noindex> ametlikul veebisaidil. Tagauks oli olemas kogumites alates 1.882 kuni 1.921 sealhulgas (git-repositooriumis kood tagauksest puudub) ja v\u00f5imaldas kaugp\u00e4\u00e4su ilma autentimiseta t\u00e4ita s\u00fcsteemis juhuslikke shell-k\u00e4ske root-\u00f5igustega. <\/p>\n

R\u00fcnnakuks piisab Webmini avatud v\u00f5rguporti olemasolust ja funktsiooni aktiivsusest, mis muudab vananenud parooli veebiliideses (v\u00e4listatud versioonides, kuid vaikimisi lubatud kogumites 1.890). Probleem eemaldatud<\/a><\/noindex> \u00fches uuenduses<\/a><\/noindex> 1.930. Ajutine abin\u00f5una tagauste blokeerimiseks piisab konfiguratsioonifailist \/etc\/webmin\/miniserv.conf seadistuse \"passwd_mode=\" eemaldamisest. Testimiseks on ette valmistatud exploit protot\u00fc\u00fcp<\/a><\/noindex>.<\/p>\n

Probleem oli avastatud<\/a><\/noindex> failis password_change.cgi, kus kontrolliti veebivormi vananenu parooli kasutatakse<\/a><\/noindex> unix_crypt funktsioon, millele edastatakse kasutaja poolt sisestatud parool ilma erim\u00e4rkide vm suuremate m\u00e4rkide eristamiseta. Git-repositoriumis on see funktsioon on<\/a><\/noindex> mooduli Crypt::UnixCrypt \u00fcmbersidumisega ja see ei kujuta ohtu, kuid Sourceforge'i veebisaidil tarnitavas arhiivis, kus on kood, kutsutakse esile kood, mis otse p\u00f6\u00f6rdub \/etc\/shadow poole, kuid teeb seda shell-konstruktsiooni abil. R\u00fcnnaku jaoks piisab, kui kirjutada vana parooli v\u00e4ljal s\u00fcmbol \"|\" ja sellele j\u00e4rgnev kood k\u00e4ivitatakse root'i \u00f5igustes serveris.<\/p>\n

Kohal v\u00e4itele<\/a><\/noindex> Webmini arendajate, et kahjulik kood pandi, nagu tundub, projekti infrastruktuuri kompromiteerimise t\u00f5ttu. \u00dcksikasjad pole veel avaldatud, seega pole selge, kas h\u00e4kkimine piirdus ainult Sourceforge'i kontode \u00fcle v\u00f5tmiseni v\u00f5i haaras ka teisi Webmini arenduse ja koostamise infrastruktuuri elemente. Kahjulik kood oli arhivides alates 2018. aasta m\u00e4rtsist. Probleem puudutas ka Usermini kogemusi<\/a><\/noindex>. Praegu on k\u00f5ik allalaadimisarhiivid Git'ist uuesti koostatud.<\/p>\n

<\/a><\/noindex><\/p>\n

Allikas: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 Webmin, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u043c, \u0432\u044b\u044f\u0432\u043b\u0435\u043d \u0431\u044d\u043a\u0434\u043e\u0440 (CVE-2019-15107), \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043d\u044b\u0439 \u0432 \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u044b\u0445 \u0447\u0435\u0440\u0435\u0437 Sourceforge \u0438 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0441\u0430\u0439\u0442\u0435. \u0411\u044d\u043a\u0434\u043e\u0440 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u043e\u0432\u0430\u043b \u0432 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 \u0441 1.882 \u043f\u043e 1.921 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (\u0432 git-\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043a\u043e\u0434 \u0441 \u0431\u044d\u043a\u0434\u043e\u0440\u043e\u043c \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u043e\u0432\u0430\u043b) \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u043b \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 shell-\u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root. \u0414\u043b\u044f […]<\/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-37292","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47Webmin\u2019is leitud tagauks, mis v\u00f5imaldab kaugjuhtimist root-i \u00f5igustega | ProHoster","description":"Webmini paketis, mis pakub serveri kaugjuhtimise vahendeid, leiti tagaukse (CVE-2019-15107), mis avastati projekti ametlikes kogudes, mida levitati l\u00e4bi Sourceforge ja soovitati peamiseks veebilehelt. Tagauks oli olemas kogudes versioonidest 1.882 kuni 1.921 (git-repositooriumis puudus kood tagauksega) ja v\u00f5imaldas kaugjuhtimisega, ilma autentimise l\u00e4bimata, k\u00e4ivitada s\u00fcsteemis root-i \u00f5igustega suvalisi shell-k\u00e4ske. Kliendi","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/v-webmin-najden-bekdor-pozvolyayushhij-udalyonno-poluchit-dostup-s-pravami-root","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 \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412 Webmin \u043d\u0430\u0439\u0434\u0435\u043d \u0431\u044d\u043a\u0434\u043e\u0440, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root | ProHoster","og:description":"\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 Webmin, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u043c, \u0432\u044b\u044f\u0432\u043b\u0435\u043d \u0431\u044d\u043a\u0434\u043e\u0440 (CVE-2019-15107), \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043d\u044b\u0439 \u0432 \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u044b\u0445 \u0447\u0435\u0440\u0435\u0437 Sourceforge \u0438 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