{"id":109268,"date":"2023-07-06T03:10:18","date_gmt":"2023-07-06T01:10:18","guid":{"rendered":"https:\/\/prohoster.info\/?p=109268"},"modified":"2023-07-06T09:41:48","modified_gmt":"2023-07-06T07:41:48","slug":"uyazvimost-stackrot-v-yadre-linux-pozvolyayushhaya-povysit-svoi-privilegii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-stackrot-v-yadre-linux-pozvolyayushhaya-povysit-svoi-privilegii","title":{"rendered":"StackRot haavatavus Linuxi tuumas, mis v\u00f5imaldab privileegide t\u00f5stmist.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Linux 6.1 tuumises valmis VMA (Virtual Memory Area) andmestruktuuri «red-black tree» muutmine struktuuriks «maple tree» t\u00f5i kaasa haavatavuse (CVE-2023-3269), mis v\u00f5imaldab mittepriviligeeritud kasutajal k\u00e4ivitada oma koodi tuum \u00f5igustes. Haavatavus, mille koodinimi on StackRot, ilmnes alates 6.1 tuuma v\u00e4ljaandest ja likvideeriti uuendustes 6.4.1, 6.3.11 ja 6.1.37. <\/p>\n

Struktuur «maple tree» on B-puu variant, mis toetab vahemiku indekseerimist ja on projekteeritud kaasaegsete protsessorite vahem\u00e4lu t\u00f5husaks kasutamiseks. V\u00f5rreldes «red-black tree» kasutamisega, pakub «maple tree» suuremat j\u00f5udlust. Haavatavus on p\u00f5hjustatud veast kogumispokkide t\u00f6\u00f6tlemisel - «maple tree» struktuuris, mida kasutatakse virtuaalse m\u00e4lu piirkondade haldamiseks tuumas, sai puu s\u00f5lme asendamine toimuda ilma kirjutamise lukustamise kehtestamiseta, mis t\u00f5i kaasa tingimused m\u00e4lu ala juurde p\u00e4\u00e4semiseks p\u00e4rast selle vabastamist (use-after-free). <\/p>\n

Haavatavuse \u00e4rakasutamist raskendas asjaolu, et s\u00f5lmed struktuuris «maple tree» vabastatakse viivitusega, kasutades callback-k\u00f5nesid RCU (Read-copy-update) lukustustega. Siiski suutis uuringute l\u00e4biviijatel \u00fcletada tekkivad raskused ja valmistada ette t\u00f6\u00f6tava exploiti, mille nad plaanivad avaldada juuli l\u00f5pus, et anda kasutajatele aega oma s\u00fcsteemide uuendamiseks. Haavatavuse \u00e4rakasutamine on v\u00f5imalik peaaegu k\u00f5igis tuuma konfiguratsioonides ja n\u00f5uab vaid minimaalset privileegi.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u043d\u044b\u0439 \u0432 \u044f\u0434\u0440\u0435 Linux 6.1 \u043f\u0435\u0440\u0435\u0432\u043e\u0434 VMA (Virtual Memory Area) \u0441\u043e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445 «red-black tree» \u043d\u0430 «maple tree» \u043f\u0440\u0438\u0432\u0451\u043b \u043a \u043f\u043e\u044f\u0432\u043b\u0435\u043d\u0438\u044e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2023-3269), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \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 \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. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f StackRot, \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u044f\u0434\u0440\u0430 6.1 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 6.4.1, 6.3.11 \u0438 6.1.37. \u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 «maple […]<\/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-109268","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 StackRot Linuxi tuumas, mis v\u00f5imaldab \u00f5iguste t\u00f5stmist | ProHoster","description":"Linux 6.1 tuum VMA (Virtuaalne M\u00e4luala) andmete struktuuri red-black tree'lt maple tree'le \u00fcleminek t\u00f5i kaasa haavatavuse (CVE-2023-3269), mis v\u00f5imaldab mitteprivilegeeritud kasutajal.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-stackrot-v-yadre-linux-pozvolyayushhaya-povysit-svoi-privilegii","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 StackRot \u0432 \u044f\u0434\u0440\u0435 Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 | ProHoster","og:description":"\u0412\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u043d\u044b\u0439 \u0432 \u044f\u0434\u0440\u0435 Linux 6.1 \u043f\u0435\u0440\u0435\u0432\u043e\u0434 VMA (Virtual Memory Area) \u0441\u043e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445 "red-black tree" \u043d\u0430 "maple tree" \u043f\u0440\u0438\u0432\u0451\u043b \u043a \u043f\u043e\u044f\u0432\u043b\u0435\u043d\u0438\u044e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2023-3269), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \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.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-stackrot-v-yadre-linux-pozvolyayushhaya-povysit-svoi-privilegii","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":"2023-07-06T01:10:18+00:00","article:modified_time":"2023-07-06T07:41:48+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\/109268","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=109268"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/109268\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=109268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=109268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=109268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}