{"id":92097,"date":"2020-08-22T19:42:16","date_gmt":"2020-08-22T17:42:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-chrony"},"modified":"2020-08-22T19:42:16","modified_gmt":"2020-08-22T17:42:16","slug":"uyazvimost-v-chrony","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-chrony","title":{"rendered":"Vulnera n\u00eb chrony","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00eb chrony<\/a><\/noindex>, realizimi i protokollit NTP, i p\u00ebrdorur p\u00ebr t\u00eb sinkronizuar koh\u00ebn e sakt\u00eb n\u00eb distribucione t\u00eb ndryshme Linux, u identifikua<\/a><\/noindex> vulneraibiliteti (CVE-2020-14367<\/a><\/noindex>), q\u00eb lejon p\u00ebrs\u00ebritjen e \u00e7do skedari n\u00eb sistem, duke pasur qasje si nj\u00eb p\u00ebrdorues lokal i pap\u00ebrgjegjsh\u00ebm chrony. Kjo dob\u00ebsi mund t\u00eb eksplatohet vet\u00ebm nga p\u00ebrdoruesi chrony, \u00e7ka e ul rrezikshm\u00ebrin\u00eb e saj. Megjithat\u00eb, problemi komprometon nivelin e izolimit n\u00eb chrony dhe mund t\u00eb p\u00ebrdoret n\u00eb rast se zbulohet nj\u00eb dob\u00ebsi tjet\u00ebr n\u00eb kodin q\u00eb ekzekutohet pas r\u00ebnies s\u00eb privilegjeve.<\/p>\n

Vulnerabiliteti shkaktohet nga krijimi jo i sigurt i skedarit pid, i cili krijohej n\u00eb faz\u00ebn kur chrony ende nuk kishte hequr privilegjet dhe ekzekutohej me t\u00eb drejtat e root. N\u00eb k\u00ebt\u00eb rast, katalogu \/run\/chrony, n\u00eb t\u00eb cilin shkruhej skedari pid, krijohej me t\u00eb drejtat 0750 p\u00ebrmes systemd-tmpfiles ose gjat\u00eb nisjes s\u00eb chronyd n\u00eb lidhje me p\u00ebrdoruesin dhe grupin \u00abchrony\u00bb. K\u00ebshtu, n\u00ebse ka akses n\u00eb p\u00ebrdoruesin chrony, ekziston mund\u00ebsia p\u00ebr t\u00eb z\u00ebvend\u00ebsuar skedarin pid \/run\/chrony\/chronyd.pid me nj\u00eb lidhje simbolike. Lidhja simbolike mund t\u00eb tregoj\u00eb p\u00ebr \u00e7do skedar sistemik, i cili do t\u00eb ri-shkruhet gjat\u00eb nisjes s\u00eb chronyd.<\/p>\n

root# systemctl stop chronyd.service
\n root# sudo -u chrony \\\/bin\\\/bash<\/p>\n

chrony$ cd \\\/run\\\/chrony
\n chrony$ ln -s \/etc\/shadow chronyd.pid
\n chrony$ exit<\/p>\n

root# \/usr\/sbin\/chronyd -n
\n ^C
\n # \u0432\u043c\u0435\u0441\u0442\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \/etc\/shadow \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u0445\u0440\u0430\u043d\u0451\u043d \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 chronyd
\n root# cat \/etc\/shadow
\n 15287<\/p>\n

Vulnerabiliteti i eliminuar<\/a><\/noindex> n\u00eb publikimin chrony 3.5.1<\/a><\/noindex>. P\u00ebrdit\u00ebsime t\u00eb paketave p\u00ebr korrigjimin e dob\u00ebsive jan\u00eb n\u00eb dispozicion p\u00ebr Fedora<\/a><\/noindex>. N\u00eb procesin e p\u00ebrgatitjes s\u00eb p\u00ebrdit\u00ebsimit p\u00ebr RHEL<\/a><\/noindex>, Debian<\/a><\/noindex> dhe Ubuntu<\/a><\/noindex>.<\/p>\n

SUSE dhe openSUSE p\u00ebr problemin nuk jan\u00eb t\u00eb ekspozuara<\/a><\/noindex>, pasi lidhja simbolike p\u00ebr chrony krijohet drejtp\u00ebrdrejt n\u00eb katalogun \/run, pa p\u00ebrdorimin e n\u00ebnkatalogjeve shtes\u00eb. <\/p>\n

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

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

\u0412 chrony, \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 NTP, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-14367), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u043b\u044e\u0431\u043e\u0439 \u0444\u0430\u0439\u043b \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u0438\u043c\u0435\u044f \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e chrony. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0447\u0435\u0440\u0435\u0437 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f chrony, \u0447\u0442\u043e \u0441\u043d\u0438\u0436\u0430\u0435\u0442 \u0435\u0451 \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c. \u0422\u0435\u043c \u043d\u0435 \u043c\u0435\u043d\u0435\u0435, \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0438\u0440\u0443\u0435\u0442 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0432 chrony \u0438 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0432 […]<\/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-92097","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\udd47Dob\u00ebsia n\u00eb chrony | ProHoster","description":"N\u00eb chrony, realizimi i protokollit NTP, q\u00eb p\u00ebrdoret p\u00ebr sinkronizimin e koh\u00ebs s\u00eb sakt\u00eb n\u00eb distribucione t\u00eb ndryshme Linux, \u00ebsht\u00eb identifikuar nj\u00eb dob\u00ebsi (CVE-2020-14367), e cila lejon rishkimin e \u00e7do skedari n\u00eb sistem, duke pasur akses si nj\u00eb p\u00ebrdorues lokal pa privilegje p\u00ebr chrony. Dob\u00ebsia mund t\u00eb shfryt\u00ebzohet vet\u00ebm p\u00ebrmes p\u00ebrdoruesit chrony, \u00e7ka e ul rrezikshm\u00ebrin\u00eb e saj. Megjithat\u00eb, problemi komprometon nivelin e izolimit n\u00eb chrony dhe mund t\u00eb p\u00ebrdoret n\u00eb","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-chrony","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","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 chrony | ProHoster","og:description":"\u0412 chrony, \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 NTP, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-14367), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u043b\u044e\u0431\u043e\u0439 \u0444\u0430\u0439\u043b \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u0438\u043c\u0435\u044f \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e chrony. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0447\u0435\u0440\u0435\u0437 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f chrony, \u0447\u0442\u043e \u0441\u043d\u0438\u0436\u0430\u0435\u0442 \u0435\u0451 \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c. \u0422\u0435\u043c \u043d\u0435 \u043c\u0435\u043d\u0435\u0435, \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0438\u0440\u0443\u0435\u0442 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0432 chrony \u0438 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\u0432","og:url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-chrony","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":"2020-08-22T17:42:16+00:00","article:modified_time":"2020-08-22T17:42:16+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"92097","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":null,"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":"2021-02-28 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