{"id":114696,"date":"2024-04-01T12:25:54","date_gmt":"2024-04-01T10:25:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-podsisteme-io_uring-pozvolyayushhaya-poluchit-privilegii-root"},"modified":"2024-04-01T12:25:54","modified_gmt":"2024-04-01T10:25:54","slug":"uyazvimost-v-podsisteme-io_uring-pozvolyayushhaya-poluchit-privilegii-root","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/uyazvimost-v-podsisteme-io_uring-pozvolyayushhaya-poluchit-privilegii-root","title":{"rendered":"Nj\u00eb vulnerabilitet n\u00eb n\u00ebn-sistemin io_uring, i cili lejon marrjen e privilegjeve root","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00eb nd\u00ebrfaqen e hyrjes\/kalimit asinkron io_uring, e siguruar nga b\u00ebrthama Linux, \u00ebsht\u00eb zbuluar nj\u00eb dob\u00ebsi (CVE-2024-0582), e cila lejon nj\u00eb p\u00ebrdorues pa privilegje t\u00eb fitoj\u00eb t\u00eb drejtat root n\u00eb sistem. P\u00ebr t\u00eb shfryt\u00ebzuar k\u00ebt\u00eb dob\u00ebsi, mjafton nj\u00eb akses lokal i zakonsh\u00ebm n\u00eb sistem, pa pasur nevoj\u00eb p\u00ebr manipulime me hap\u00ebsirat e emrave. Aktualisht \u00ebsht\u00eb n\u00eb dispozicion publik nj\u00eb shfryt\u00ebzim aktiv, si dhe nj\u00eb p\u00ebrshkrim i detajuar i nj\u00eb teknike t\u00eb dyt\u00eb p\u00ebr shfryt\u00ebzimin e dob\u00ebsis\u00eb. <\/p>\n

Dob\u00ebsia shkaktohet nga nj\u00eb qasje n\u00eb nj\u00eb bllok memorie t\u00eb liruar tashm\u00eb (use-after-free) n\u00eb n\u00ebn-sistemin io_uring, q\u00eb ndodh gjat\u00eb regjistrimit dhe lirimit t\u00eb nj\u00eb blloku rrethor, t\u00eb krijuar me flagun IORING_REGISTER_PBUF_RING. N\u00eb situat\u00ebn e p\u00ebrdorimit t\u00eb operacionit mmap() n\u00eb bllok, ai mbetet i reflektuar n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit pas p\u00ebrfundimit t\u00eb operacionit t\u00eb lirimit (IORING_UNREGISTER_PBUF_RING). Duke shfryt\u00ebzuar k\u00ebt\u00eb ve\u00e7ori, nj\u00eb sulmues mund t\u00eb lexoj\u00eb dhe shkruaj\u00eb t\u00eb dh\u00ebna n\u00eb faqet e memories t\u00eb kthyer nga sistemi i shp\u00ebrndarjes s\u00eb memories s\u00eb b\u00ebrtham\u00ebs. <\/p>\n

Problemi shfaqet q\u00eb nga l\u00ebshimi i b\u00ebrtham\u00ebs Linux 6.4 dhe \u00ebsht\u00eb korrigjuar n\u00eb l\u00ebshimet 6.7 dhe 6.6.5, si dhe n\u00eb paket\u00ebn e b\u00ebrtham\u00ebs 6.5.0-21, t\u00eb p\u00ebrgatitur p\u00ebr Ubuntu 22.04 dhe 23.10. E ve\u00e7ant\u00eb \u00ebsht\u00eb se n\u00eb b\u00ebrtham\u00ebn kryesore problemi u korrigjua n\u00eb dhjetor 2023, projekti Google Zero b\u00ebri t\u00eb ditur nj\u00eb mesazh t\u00eb gabimit p\u00ebr pranin\u00eb e dob\u00ebsis\u00eb m\u00eb 8 janar, dhe paketa me b\u00ebrtham\u00ebn e korrigjuar 6.5 p\u00ebr Ubuntu u formua vet\u00ebm m\u00eb 22 shkurt 2024. N\u00eb shp\u00ebrndarje t\u00eb tjera, ndjekja e korrigjimit dhe p\u00ebrfshirjes n\u00eb dob\u00ebsi mund t\u00eb b\u00ebhet n\u00eb faqet: Debian, Gentoo, RHEL, SUSE, Fedora, Arch. <\/p>\n

Shfryt\u00ebzimi i par\u00eb manipuluar me krijimin e nj\u00eb numri t\u00eb madh faqesh membrane t\u00eb kontrolluara nga sulmuesi p\u00ebr t\u00eb p\u00ebrcaktuar renditjen e memories n\u00eb b\u00ebrtham\u00eb dhe qasje n\u00eb faqet fizike fqinje t\u00eb memories, duke p\u00ebrdorur si sinjalizues p\u00ebrmbajtjen e strukturave t\u00eb socket-eve t\u00eb mbushura n\u00eb nj\u00eb form\u00eb t\u00eb caktuar. P\u00ebr t\u00eb ekzekutuar kodin n\u00eb shfryt\u00ebzim \u00ebsht\u00eb p\u00ebrdorur nj\u00eb 'gadgets' (sekuenc\u00eb e instrukcioneve ekzistuese n\u00eb b\u00ebrtham\u00eb), e cila \u00e7on n\u00eb ekzekutimin e funksionit call_usermodehelper_exec, i cili \u00ebsht\u00eb i destinuar p\u00ebr t\u00eb nisur procese n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit nga b\u00ebrthama. <\/p>\n

Eksploiti i dyt\u00eb bazohet n\u00eb faktin se, kur t\u00eb gjitha slab-blloqet n\u00eb cache jan\u00eb shteruar (p.sh., kur nj\u00eb skedar hapet shum\u00eb her\u00eb), faqet e lira t\u00eb memories, t\u00eb cilat sulmuesi ka qasje, p\u00ebrdoren nga sistemi i shp\u00ebrndarjes s\u00eb memories p\u00ebr t\u00eb krijuar nj\u00eb slab-bllok t\u00eb ri dhe t\u00eb gjitha strukturat e reja t\u00eb skedareve fillojn\u00eb t\u00eb vendosen n\u00eb k\u00ebt\u00eb bllok. Si rrjedhoj\u00eb, disa struktura skedari do t\u00eb p\u00ebrfundojn\u00eb n\u00eb faqet e memories q\u00eb sulmuesi mund t'i lexoj\u00eb dhe t\u00eb shkruaj\u00eb. Shfryt\u00ebzimi p\u00ebrfshin organizimin e vendosjes s\u00eb skedarit t\u00eb nevojsh\u00ebm n\u00eb cache-n e skedareve dhe z\u00ebvend\u00ebsimin n\u00eb strukturat e lidhura me t\u00eb t\u00eb fush\u00ebs f_mode, e cila p\u00ebrcakton t\u00eb drejtat e aksesit, duke e b\u00ebr\u00eb t\u00eb mundsh\u00ebm aksesin p\u00ebr t\u00eb shkruar skedarin sistemik t\u00eb nevojsh\u00ebm, p.sh., \/etc\/passwd.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0435 \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\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u043c \u044f\u0434\u0440\u043e\u043c Linux, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-0582), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \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 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0414\u043b\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 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[…]<\/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-114696","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\udd47Vulnerabiliteti n\u00eb n\u00ebn-sistemin io_uring q\u00eb lejon marrjen e privilegjit root | ProHoster","description":"N\u00eb nd\u00ebrfaqen e futjes\/daljes asinkrone io_uring, e ofruar nga b\u00ebrthama Linux, \u00ebsht\u00eb identifikuar nj\u00eb dob\u00ebsi (CVE-2024-0582) q\u00eb i lejon nj\u00eb p\u00ebrdoruesi pa privilegje t\u00eb fitoj\u00eb t\u00eb drejtat root n\u00eb 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ProHoster","og:description":"\u0412 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0435 \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\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u043c \u044f\u0434\u0440\u043e\u043c Linux, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-0582), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \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 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435.","og:url":"https:\/\/prohoster.info\/sq\/blog\/news\/uyazvimost-v-podsisteme-io_uring-pozvolyayushhaya-poluchit-privilegii-root","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":"2024-04-01T10:25:54+00:00","article:modified_time":"2024-04-01T10:25:54+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\/sq\/wp-json\/wp\/v2\/posts\/114696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/comments?post=114696"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/114696\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/media?parent=114696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/categories?post=114696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/tags?post=114696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}