Ksmbd moodulis, mis sisaldab Linuxi tuuma sisse ehitatud SMB protokollil p\u00f5hineva failiserveri teostust, on tuvastatud kriitiline haavatavus, mis v\u00f5imaldab kaugelt saavutada oma koodi k\u00e4ivitamist tuuma \u00f5igustes. R\u00fcnnakut saab l\u00e4bi viia ilma autentimiseta, piisab, kui s\u00fcsteemis on ksmbd moodul aktiveeritud. Probleem ilmneb alates tuumast 5.15, mis anti v\u00e4lja novembris 2021, ja on ilma liigse kajastamiseta k\u00f5rvaldatud uuendustes 5.15.61, 5.18.18 ja 5.19.2, mis on koostatud augustis 2022. Kuna CVE identifikaator pole probleemile veel m\u00e4\u00e4ratud, pole t\u00e4pset teavet probleemi k\u00f5rvaldamise kohta distributsioonides veel olemas. <\/p>\n
Haavatavuse kasutamise detailid ei ole veel avaldatud, teada on ainult see, et haavatavus on tingitud juba vabastatud m\u00e4lu piirkonna juurde p\u00e4\u00e4semisest (Use-After-Free) seoses objekti olemasolu kontrollimise puudumisega enne selle abil operatsioonide teostamist. Probleem on seotud sellega, et smb2_tree_disconnect() funktsioonis vabastati m\u00e4lu, mis oli eraldatud ksmbd_tree_connect struktuuri jaoks, kuid p\u00e4rast seda j\u00e4i alles n\u00e4itaja, mida kasutati teatud v\u00e4listest p\u00e4ringutest, mis sisaldavad SMB2_TREE_DISCONNECT k\u00e4ske. <\/p>\n
Lisaks mainitud haavatavusele on ksmbd-s parandatud veel 4 v\u00e4hem ohtlikku probleemi: <\/p>\n
SMB-serveri toimimise toetamine ksmbd mooduli kaudu on saadaval Samba paketis alates versioonist 4.16.0. Erinevalt kasutajaruumi SMB-serverist on ksmbd t\u00f5husam j\u00f5udluse, m\u00e4lu tarbimise ja tuuma t\u00e4iustatud funktsioonidega integreerimise osas. Ksmbd esitatakse kui k\u00f5rge j\u00f5udlusega ja rakendamiseks valmis laiendus Samba jaoks, mis vajadusel integreeritakse Samba t\u00f6\u00f6riistade ja raamatukogudega. Ksmbd koodi autoriteks on Namjae Jeon Samsungist ja Hyunchul Lee LG-st, ning tuuma hooldust teostab S\u0435teve French Microsoftist, kes on Linuxi tuuma CIFS\/SMB2\/SMB3 alams\u00fcsteemi hooldaja ning pikaajaline Samba arendajate meeskonna liige, kes on oluliselt panustanud SMB\/CIFS protokollide toe elluviimisse Samba ja Linuxis. \u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430. \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0430 \u0431\u0435\u0437 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0447\u0442\u043e\u0431\u044b \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0431\u044b\u043b \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u043d \u043c\u043e\u0434\u0443\u043b\u044c ksmbd. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 5.15, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u043d\u043e\u044f\u0431\u0440\u0435 2021 \u0433\u043e\u0434\u0430, \u0438 \u0431\u0435\u0437 \u043b\u0438\u0448\u043d\u0435\u0439 […]<\/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-106241","post","type-post","status-publish","format-standard","hentry","category-news"],"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\udd47Haavatavus Linuxi tuuma ksmbd moodulis, mis v\u00f5imaldab kauglisamise kaudu oma koodi t\u00e4itmist | ProHoster","description":"Ksmbd moodulis, mis sisaldab Linuxi tuumasse integreeritud SMB-protokolli baasil failiserveri implementatsiooni, on avastatud kriitiline haavatavus, mis v\u00f5imaldab kauglisamise kaudu t\u00e4ita oma koodi tuuma \u00f5igustes.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-module-ksmbd-yadra-linux-pozvolyayushhaya-udalyonno-vypolnit-svoj-kod","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd \u044f\u0434\u0440\u0430 Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 | ProHoster","og:description":"\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-module-ksmbd-yadra-linux-pozvolyayushhaya-udalyonno-vypolnit-svoj-kod","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":"2022-12-23T07:36:47+00:00","article:modified_time":"2022-12-23T07:36:47+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\/et\/wp-json\/wp\/v2\/posts\/106241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=106241"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/106241\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=106241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=106241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=106241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"