{"id":113876,"date":"2024-02-26T22:02:49","date_gmt":"2024-02-26T20:02:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek"},"modified":"2024-02-26T22:02:49","modified_gmt":"2024-02-26T20:02:49","slug":"uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","title":{"rendered":"Linuxi tuumauuendused, mis m\u00f5jutavad ksmbd, ktls, uio ja v\u00f5rgu v\u00e4lja.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Linuxi tuumiku ksmbd, mis pakub kernelisse integreeritud SMB-protokollil p\u00f5hinevat failiserverit, on leitud kaks haavatavust, mis v\u00f5imaldavad kaugelt ja ilma autentimiseta saavutada oma koodi t\u00e4itmist kernelitasemel v\u00f5i m\u00e4\u00e4rata kernelim\u00e4lu sisu s\u00fcsteemides, kus on aktiveeritud ksmbd moodul. Probleemid ilmnevad alates kernelist 5.15, kuhu on lisatud ksmbd moodul. Haavatavused on k\u00f5rvaldatud kernelite v\u00e4rskendustes 6.7.2, 6.6.14, 6.1.75 ja 5.15.145. Paranduste j\u00e4lgimiseks erinevates distributsioonides v\u00f5ib k\u00fclastada j\u00e4rgmisi lehti: Debian, Ubuntu, Gentoo, RHEL, SUSE, Fedora, Arch.     <\/p>\n<p>Esimene haavatavus (CVE-2024-26592) v\u00f5ib viia r\u00fcndaja koodi k\u00e4ivitamiseni kernelitasemel, kui saadetakse spetsiaalselt vormindatud autentimata TCP-p\u00e4ringud <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/dts-shicago\/\"   title=\"serveri\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2885\">serveri<\/a> ksmbd. Haavatavus on p\u00f5hjustatud objektide lukustamise vale korraldamise t\u00f5ttu TCP-\u00fchenduse loomise ja katkestamise koodis ksmbd, mis v\u00f5imaldab luua tingimused juba vabastatud m\u00e4lu (use-after-free) juurde p\u00e4\u00e4semiseks.       <\/p>\n<p>Teine haavatavus (CVE-2024-26594) viib kernelim\u00e4lu sisu lekkimiseni, kui kliendi saadetud seansi loomise p\u00e4ringus t\u00f6\u00f6deldakse vale mech-tokenit. Haavatavus tuleneb vale andmete t\u00f6\u00f6tlemisest SMB2 Mech-tokeniga ja viib andmete lugemiseni m\u00e4\u00e4ratud puhverpiiridest.    <\/p>\n<p>Lisaks v\u00f5ib m\u00e4rkida veel mitmeid haavatavusi Linuxi kernelis:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-52439 \u2014 juurdep\u00e4\u00e4s juba vabastatud m\u00e4lule (use-after-free) uio avamise funktsioonis uio alamkorralduses, mis v\u00f5imaldab potentsiaalselt kohalikel kasutajatel k\u00e4ivitada oma koodi kernelitasemel.\n<li class=\"l\"> CVE-2024-26582 \u2014 juurdep\u00e4\u00e4s juba vabastatud m\u00e4lule (use-after-free) TLS-i rakenduses kernelitasemel (ktls), mis v\u00f5imaldab potentsiaalselt t\u00f5sta oma \u00f5igusi dekr\u00fcpteerimise operatsioonide k\u00e4igus.\n<li class=\"l\"> CVE-2024-0646 \u2014 m\u00e4lu\u00fclekanne vahem\u00e4lust v\u00e4ljapoole ktls alams\u00fcsteemis, mis toimub teatud kohalikus manipulatsioonis ktls soketiga splice funktsiooni kaudu. See haavatavus v\u00f5imaldab potentsiaalselt oma \u00f5igusi s\u00fcsteemis t\u00f5sta.\n<li class=\"l\"> CVE-2023-6932 \u2014 v\u00f5idujooksu olek IGMP protokolli (Internet Group Management Protocol) rakenduses IPv4-kogumikes, mis viib juba vabastatud m\u00e4lule (use-after-free) juurdep\u00e4\u00e4suni. See haavatavus v\u00f5imaldab potentsiaalselt kohalikel kasutajatel oma \u00f5igusi s\u00fcsteemis t\u00f5sta.\n<li class=\"l\"> CVE-2023-52435 \u2014 MSS \u00fclevool skb_segment() funktsioonis kernelisisese v\u00f5rgu tegemisel.\n<li class=\"l\"> CVE-2024-26601 \u2014 vea t\u00f5ttu plokkide vabastamise koodis ext4 failis\u00fcsteemis, mis v\u00f5ib p\u00f5hjustada buddy bitmapi rikutust.\n<li class=\"l\"> CVE-2024-26598 \u2014 juurdep\u00e4\u00e4s juba vabastatud m\u00e4lule (use-after-free) h\u00fcperviisorites. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4386\">KVM<\/a>.        <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60668\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\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\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \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 \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 \u0438\u043b\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043c\u043e\u0434\u0443\u043b\u0435\u043c ksmbd. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 5.15, \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0431\u044b\u043b \u043f\u0440\u0438\u043d\u044f\u0442 \u043c\u043e\u0434\u0443\u043b\u044c ksmbd. [&hellip;]<\/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-113876","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\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, 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