{"id":123647,"date":"2025-04-25T03:05:14","date_gmt":"2025-04-25T01:05:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/prototip-rutkita-dlya-linux-ispolzuyushhij-io_uring-dlya-obhoda-analizatorov-sistemnyh-vyzovov"},"modified":"2025-04-25T03:05:14","modified_gmt":"2025-04-25T01:05:14","slug":"prototip-rutkita-dlya-linux-ispolzuyushhij-io_uring-dlya-obhoda-analizatorov-sistemnyh-vyzovov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/prototip-rutkita-dlya-linux-ispolzuyushhij-io_uring-dlya-obhoda-analizatorov-sistemnyh-vyzovov","title":{"rendered":"Linuxi jaoks m\u00f5eldud rootkit'i protot\u00fc\u00fcp, mis kasutab io_uring'i s\u00fcsteemikutsungite anal\u00fcsaatoritest m\u00f6\u00f6da hiilimiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

ARMO ettev\u00f5tte teadlased demonstreerisid, et on v\u00f5imalik luua rootkittesid, mis ei kasuta t\u00fc\u00fcpilisi s\u00fcsteemikutsungeid selliste tavap\u00e4raste toimingute, nagu failide lugemine \/ kirjutamine ja k\u00e4skude vastuv\u00f5tmine v\u00e4liselt serverilt, teostamiseks. Selle asemel on ettepanek kasutada v\u00f5rgu- ja failitoimingute teostamiseks as\u00fcnkroonse sisendi \/ v\u00e4ljundi io_uring'i liidest, mis on toetatud alates Linuxi 5.1 tuumast. <\/p>\n

Meetodi p\u00f5him\u00f5te seisneb selles, et failidele juurdep\u00e4\u00e4suks ja v\u00f5rgutoimingute (read \/ write, recv \/ send \/ connect \/ bind \/ listen) tegemiseks ei ole vaja eraldi s\u00fcsteemikutsungeid, vaid v\u00f5ib kasutada \u00fchiseid io_uring'i s\u00fcsteemikutsungeid (io_uring_enter, io_uring_setup, io_uring_register jne), mida t\u00fc\u00fcpilised t\u00f6\u00f6riistad pahatahtliku tegevuse tuvastamiseks ei anal\u00fc\u00fcsi. io_uring'i liides toetab umbes 60 erinevat toimingut. Arendamisel on v\u00f5imalus, mis v\u00f5imaldab uusi protsesse io_uring'i kaudu k\u00e4ivitada. <\/p>\n

Meetodi t\u00f6\u00f6 demonstreerimiseks on valmistatud rootkit'i protot\u00fc\u00fcp Curing, mis t\u00e4idab selliseid toiminguid nagu k\u00e4skude vastuv\u00f5tmine v\u00e4liselt serverile<\/a> ja failide edastamine\/muutmine. Demonstreerimisel kasutati TCP-porti 8888 v\u00e4lise hosti jaoks ja faili sisu saatmist «\/etc\/shadow». Eeldatakse, et p\u00e4rast s\u00fcsteemi edukat kompromiteerimist ja \u00f5iguste saamist installib r\u00fcndaja oma kohaloleku kinnitamiseks rootkit'i rikutud s\u00fcsteemi. <\/p>\n

Tehtud eksperimendis j\u00e4i Curing rootkiti aktiivsus m\u00e4rkamata Falco ja Tetragoni monitooringu t\u00f6\u00f6riistade poolt, mida kasutatakse hostide ja konteinerite turvalisuse anomaaliate m\u00e4\u00e4ramiseks (Kubernetes-p\u00f5hise infrastruktuuri integreerimine on toetatud). Nimetatud t\u00f6\u00f6riistad kasutavad s\u00fcsteemik\u00f5nede pealtkuulamist, et anal\u00fc\u00fcsida selliseid s\u00fcndmusi nagu protsesside k\u00e4itamine, v\u00f5rguaktiivsus ja failide k\u00e4sitlemine, kuid ei arvesta io_uring alams\u00fcsteemi kasutamise v\u00f5imalust sarnaste toimingute jaoks. Suur osa Linuxile kergesti k\u00e4ttesaadavaid kommertslikke turvainfote probably availablity detection systems in general based on the interception of system calls. <\/p>\n

Kuna v\u00e4ltida v\u00f5rgu- ja failitegevuse j\u00e4lgimisvahendite m\u00f6\u00f6dah\u00fcppamist, on soovitatav kasutada KRSI (Kernel Runtime Security Instrumentation) mehhanismi, mis ilmus Linuxi tuumas versioonis 5.7 ja v\u00f5imaldab BPF-programmide kinnitamist igasugustele LSM-i konksudele. N\u00e4iteks v\u00f5imaldab KRSI LSM-i konksude tasemel j\u00e4lgida failide operatsioone, v\u00f5rgu\u00fchendusi ja protsesside k\u00e4ivitamist, s\u00f5ltumata sellest, kas need operatsioonid on algatatud spetsiifiliste s\u00fcsteemi kutsungite kaudu v\u00f5i io_uring'i kaudu. <\/p>\n

Varem oli io_uringi alams\u00fcsteem kriitika objektiks regulaarsete t\u00f5siste turvaaukude t\u00f5ttu. Vastuseks kasutajate soovidele, kes soovisid lihtsat t\u00f6\u00f6riista io_uringi keelamiseks ilma tuuma uuesti koostamata, lisati Linuxi tuuma versioonis 6.6 sysctl io_uring_disabled. Google keelab vaikimisi io_uring'i ChromeOS-is, Androidis ja oma serverites<\/a>, selgitades, et io_uringi halb turvalisus kaalub \u00fcles io_uringi kasutamise eelised j\u00f5udluse suurendamiseks.
\n
Allikas: 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 ARMO \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0440\u0443\u0442\u043a\u0438\u0442\u043e\u0432, \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0432\u044b\u0437\u043e\u0432\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u043e\u0432\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0447\u0442\u0435\u043d\u0438\u0435\/\u0437\u0430\u043f\u0438\u0441\u044c \u0444\u0430\u0439\u043b\u043e\u0432 \u0438 \u043f\u0440\u0438\u0451\u043c \u043a\u043e\u043c\u0430\u043d\u0434 \u043e\u0442 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u0412\u043c\u0435\u0441\u0442\u043e \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0432\u044b\u0437\u043e\u0432\u043e\u0432 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0438 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 io_uring, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 Linux 5.1. \u0421\u0443\u0442\u044c \u043c\u0435\u0442\u043e\u0434\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0432\u043c\u0435\u0441\u0442\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 […]<\/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-123647","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\udd47 Linuxi jaoks m\u00f5eldud rootkit protot\u00fc\u00fcp, mis kasutab io_uring'i s\u00fcsteemik\u00f5nede anal\u00fcsaatoritest m\u00f6\u00f6da hiilimiseks | ProHoster","description":"ARMO ettev\u00f5tte teadlased demonstreerisid v\u00f5imalust luua rootkit'e, mis ei kasuta spetsiifilisi s\u00fcsteemik\u00f5nesid tavaliste toimingute, n\u00e4iteks failide lugemise\/kirjutamise ja v\u00e4listelt serveritelt k\u00e4skude vastuv\u00f5tmise t\u00e4itmiseks. Selle asemel on soovitatud kasutada v\u00f5rgu- ja failitegevuste teostamiseks io_uringi as\u00fcnkroonset sisendi\/v\u00e4ljundi liidest, mida toetatakse alates Linuxi kerneli versioonist 5.1. Meetodi sisuks on see, et eraldi","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/prototip-rutkita-dlya-linux-ispolzuyushhij-io_uring-dlya-obhoda-analizatorov-sistemnyh-vyzovov","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\u041f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u0440\u0443\u0442\u043a\u0438\u0442\u0430 \u0434\u043b\u044f Linux, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 io_uring \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0432\u044b\u0437\u043e\u0432\u043e\u0432 | 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 ARMO \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0440\u0443\u0442\u043a\u0438\u0442\u043e\u0432, \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0432\u044b\u0437\u043e\u0432\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u043e\u0432\u044b\u0445 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\u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445","og:url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/prototip-rutkita-dlya-linux-ispolzuyushhij-io_uring-dlya-obhoda-analizatorov-sistemnyh-vyzovov","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":"2025-04-25T01:05:14+00:00","article:modified_time":"2025-04-25T01:05:14+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"123647","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":"2026-02-22 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