{"id":113601,"date":"2024-02-15T04:02:43","date_gmt":"2024-02-15T02:02:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sczenarij-ataki-na-obrabotchik-ne-ustanovlennyh-prilozhenij-v-ubuntu"},"modified":"2024-02-15T04:02:43","modified_gmt":"2024-02-15T02:02:43","slug":"sczenarij-ataki-na-obrabotchik-ne-ustanovlennyh-prilozhenij-v-ubuntu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/sczenarij-ataki-na-obrabotchik-ne-ustanovlennyh-prilozhenij-v-ubuntu","title":{"rendered":"Sc\u00e9n\u00e1\u0159 \u00fatoku na zpracovatele neinstalovan\u00fdch aplikac\u00ed v Ubuntu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdzkumn\u00edci ze spole\u010dnosti Aqua Security si v\u0161imli mo\u017enosti \u00fatoku na u\u017eivatele distribuce Ubuntu, vyu\u017e\u00edvaj\u00edc\u00ed specifik realizace zpracovatele \"command-not-found\", kter\u00fd poskytuje doporu\u010den\u00ed v p\u0159\u00edpad\u011b pokusu o spu\u0161t\u011bn\u00ed programu, kter\u00fd nen\u00ed v syst\u00e9mu dostupn\u00fd. Probl\u00e9m je v tom, \u017ee p\u0159i vyhodnocov\u00e1n\u00ed p\u0159\u00edkaz\u016f, kter\u00e9 v syst\u00e9mu chyb\u00ed, \"command-not-found\" pou\u017e\u00edv\u00e1 p\u0159i v\u00fdb\u011bru doporu\u010den\u00ed nejen bal\u00ed\u010dky ze standardn\u00edch repozit\u00e1\u0159\u016f, ale tak\u00e9 snap-bal\u00ed\u010dky z katalogu snapcraft.io. <\/p>\n

P\u0159i formov\u00e1n\u00ed doporu\u010den\u00ed na z\u00e1klad\u011b obsahu katalogu snapcraft.io zpracovatel \"command-not-found\" nezohled\u0148uje status bal\u00ed\u010dku a zahrnuje bal\u00ed\u010dky p\u0159idan\u00e9 do katalogu neov\u011b\u0159en\u00fdmi u\u017eivateli. T\u00edm p\u00e1dem \u00fato\u010dn\u00edk m\u016f\u017ee um\u00edstit do snapcraft.io bal\u00ed\u010dek se skryt\u00fdm \u0161kodliv\u00fdm obsahem a n\u00e1zvem, kter\u00fd se p\u0159ekr\u00fdv\u00e1 se st\u00e1vaj\u00edc\u00edmi DEB-bal\u00ed\u010dky, p\u016fvodn\u011b chyb\u011bj\u00edc\u00edmi v repozit\u00e1\u0159i program\u016f, nebo fiktivn\u00ed aplikace, jejich\u017e n\u00e1zvy odr\u00e1\u017eej\u00ed typick\u00e9 p\u0159eklepy a chyby u\u017eivatel\u016f p\u0159i zad\u00e1v\u00e1n\u00ed n\u00e1zv\u016f popul\u00e1rn\u00edch utilit. <\/p>\n

Nap\u0159\u00edklad je mo\u017en\u00e9 um\u00edstit bal\u00ed\u010dky \"tracert\" a \"tcpdamp\" s p\u0159edpokladem, \u017ee u\u017eivatel ud\u011bl\u00e1 chybu p\u0159i zad\u00e1v\u00e1n\u00ed n\u00e1zv\u016f utilit \"traceroute\" a \"tcpdump\", a \"command-not-found\" doporu\u010d\u00ed nainstalovat ze snapcraft.io bal\u00ed\u010dky s \u0161kodliv\u00fdm obsahem um\u00edst\u011bn\u00e9 \u00fato\u010dn\u00edkem. U\u017eivatel si m\u016f\u017ee nev\u0161imnout podvodu a myslet si, \u017ee syst\u00e9m doporu\u010duje pouze ov\u011b\u0159en\u00e9 bal\u00ed\u010dky. \u00dato\u010dn\u00edk tak\u00e9 m\u016f\u017ee um\u00edstit do snapcraft.io bal\u00ed\u010dek, jeho\u017e n\u00e1zev se p\u0159ekr\u00fdv\u00e1 se st\u00e1vaj\u00edc\u00edmi deb-bal\u00ed\u010dky, a v tomto p\u0159\u00edpad\u011b \"command-not-found\" zobraz\u00ed dv\u011b doporu\u010den\u00ed pro instalaci deb a snap, p\u0159i\u010dem\u017e u\u017eivatel m\u016f\u017ee zvolit snap, domn\u00edvaj\u00edc se, \u017ee je bezpe\u010dn\u011bj\u0161\u00ed nebo l\u00e1kav\u011bj\u0161\u00ed d\u00edky nov\u011bj\u0161\u00ed verzi.

\"Sc\u00e9n\u00e1\u0159<\/center> <\/p>\n

Aplikace ve form\u00e1tu snap, pro kter\u00e9 je v snapcraft.io povoleno automatick\u00e9 recenzov\u00e1n\u00ed, mohou b\u011b\u017eet pouze v izolovan\u00e9m prost\u0159ed\u00ed (snap-bal\u00ed\u010dky bez izolace jsou publikov\u00e1ny pouze po ru\u010dn\u00edm recenzov\u00e1n\u00ed). \u00dato\u010dn\u00edkovi m\u016f\u017ee sta\u010dit prov\u00e1d\u011bt \u010dinnost v izolovan\u00e9m prost\u0159ed\u00ed s p\u0159\u00edstupem k s\u00edti, nap\u0159\u00edklad pro t\u011b\u017ebu kryptom\u011bn, prov\u00e1d\u011bn\u00ed DDoS \u00fatok\u016f nebo rozes\u00edl\u00e1n\u00ed spamu. <\/p>\n

\u00dato\u010dn\u00edk m\u016f\u017ee tak\u00e9 vyu\u017e\u00edt v malwaru metody obch\u00e1zen\u00ed izolace, jako je exploitace neopraven\u00fdch zranitelnost\u00ed v j\u00e1d\u0159e a mechanismech zaji\u0161t\u011bn\u00ed izolace, zapojen\u00ed snap rozhran\u00ed pro p\u0159\u00edstup k extern\u00edm zdroj\u016fm (pro skryt\u00e9 nahr\u00e1v\u00e1n\u00ed zvuku a videa) nebo zachycen\u00ed vstupu z kl\u00e1vesnice p\u0159i pou\u017e\u00edv\u00e1n\u00ed protokolu X11 (pro vytvo\u0159en\u00ed funk\u010dn\u00edch keylogger\u016f v p\u00edse\u0148\u00e9m prost\u0159ed\u00ed).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Aqua Security \u043e\u0431\u0440\u0430\u0442\u0438\u043b\u0438 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430 Ubuntu, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 «command-not-found», \u0432\u044b\u0434\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0434\u0441\u043a\u0430\u0437\u043a\u0443 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u043e\u043f\u044b\u0442\u043a\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u043e\u0446\u0435\u043d\u043a\u0435 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u044b\u0445 \u043a\u043e\u043c\u0430\u043d\u0434, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0442 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, «command-not-found» \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u043f\u0440\u0438 \u0432\u044b\u0431\u043e\u0440\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0430\u043a\u0435\u0442\u044b \u0438\u0437 \u0448\u0442\u0430\u0442\u043d\u044b\u0445 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0435\u0432, \u043d\u043e snap-\u043f\u0430\u043a\u0435\u0442\u044b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":113602,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-113601","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Sc\u00e9n\u00e1\u0159 \u00fatoku na zpracovatele neinstalovan\u00fdch aplikac\u00ed v Ubuntu | ProHoster","description":"V\u00fdzkumn\u00edci z Aqua Security upozornili na mo\u017enost \u00fatoku na u\u017eivatele distribuce Ubuntu, vyu\u017e\u00edvaj\u00edc\u00ed specifika implementace zpracovatele \u201ecommand-not-found\u201c, kter\u00fd poskytuje n\u00e1pov\u011bdu.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/sczenarij-ataki-na-obrabotchik-ne-ustanovlennyh-prilozhenij-v-ubuntu","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\u0421\u0446\u0435\u043d\u0430\u0440\u0438\u0439 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0432 Ubuntu | ProHoster","og:description":"\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Aqua Security \u043e\u0431\u0440\u0430\u0442\u0438\u043b\u0438 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430 Ubuntu, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 "command-not-found", \u0432\u044b\u0434\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0434\u0441\u043a\u0430\u0437\u043a\u0443 \u0432.","og:url":"https:\/\/prohoster.info\/cs\/blog\/news\/sczenarij-ataki-na-obrabotchik-ne-ustanovlennyh-prilozhenij-v-ubuntu","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":"2024-02-15T02:02:43+00:00","article:modified_time":"2024-02-15T02:02:43+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/113601","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=113601"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/113601\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media\/113602"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media?parent=113601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/categories?post=113601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/tags?post=113601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}