{"id":36370,"date":"2019-10-31T22:11:17","date_gmt":"2019-10-31T19:11:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-modulya-lkrg-0-7-dlya-zashhity-ot-ekspluatatsii-uyazvimostej-v-yadre-linux\/"},"modified":"2019-10-31T22:11:17","modified_gmt":"2019-10-31T19:11:17","slug":"vypusk-modulya-lkrg-0-7-dlya-zashhity-ot-ekspluatatsii-uyazvimostej-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-modulya-lkrg-0-7-dlya-zashhity-ot-ekspluatatsii-uyazvimostej-v-yadre-linux","title":{"rendered":"Vyd\u00e1n\u00ed modulu LKRG 0.7 pro ochranu p\u0159ed zneu\u017eit\u00edm zranitelnost\u00ed v j\u00e1d\u0159e Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Projekt Openwall <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@lists.openwall.com\/msg00169.html\">vydal<\/a><\/noindex> vyd\u00e1n\u00ed j\u00e1drov\u00e9ho modulu <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lkrg\/\">LKRG 0.7<\/a><\/noindex>  (Linux Kernel Runtime Guard), kter\u00fd zaji\u0161\u0165uje detekci neopr\u00e1vn\u011bn\u00fdch zm\u011bn v b\u011b\u017e\u00edc\u00edm j\u00e1dru (kontrola integrity) nebo pokusy o zm\u011bnu opr\u00e1vn\u011bn\u00ed u\u017eivatelsk\u00fdch proces\u016f (ur\u010den\u00ed aplikace exploit\u016f). Modul je vhodn\u00fd jak k organizaci ochrany proti ji\u017e zn\u00e1m\u00fdm exploit\u016fm pro j\u00e1dro Linux (nap\u0159\u00edklad v situac\u00edch, kdy je problematick\u00e9 v syst\u00e9mu aktualizovat j\u00e1dro), tak k odol\u00e1v\u00e1n\u00ed exploit\u016fm pro je\u0161t\u011b nezn\u00e1m\u00e9 zranitelnosti. O zvl\u00e1\u0161tnostech LKRG se m\u016f\u017eete do\u010d\u00edst v <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47989\">prvn\u00edm ozn\u00e1men\u00ed projektu<\/a><\/noindex>. <\/p>\n<p>Mezi zm\u011bnami v nov\u00e9 verzi:<\/p>\n<ul>\n<li class=\"l\"> Byl proveden refactoring k\u00f3du pro zaji\u0161t\u011bn\u00ed podpory r\u016fzn\u00fdch architektur CPU. P\u0159id\u00e1na po\u010d\u00e1te\u010dn\u00ed podpora architektury ARM64;\n<li class=\"l\"> Zaji\u0161t\u011bna kompatibilita s j\u00e1dry Linux 5.1 a 5.2, stejn\u011b jako j\u00e1dry sestaven\u00fdmi bez zahrnut\u00ed p\u0159i sestaven\u00ed j\u00e1dra mo\u017enost\u00ed CONFIG_DYNAMIC_DEBUG,<br \/>\nCONFIG_ACPI a CONFIG_STACKTRACE, a s j\u00e1dry sestaven\u00fdmi s mo\u017enost\u00ed CONFIG_STATIC_USERMODEHELPER. P\u0159id\u00e1na experiment\u00e1ln\u00ed podpora jader z projektu grsecurity;<\/p>\n<li class=\"l\"> Logika inicializace byla v\u00fdznamn\u011b zm\u011bn\u011bna;\n<li class=\"l\"> V subsyst\u00e9mu kontroly integrity bylo znovu aktivov\u00e1no samohashov\u00e1n\u00ed (self-hashing) a odstran\u011bn stav z\u00e1vodu v enginu \u0161t\u00edtk\u016f p\u0159echodu (*_JUMP_LABEL), co\u017e vedlo k vz\u00e1jemn\u00e9mu blokov\u00e1n\u00ed p\u0159i inicializaci sou\u010dasn\u011b s ud\u00e1lostmi na\u010d\u00edt\u00e1n\u00ed nebo uvol\u0148ov\u00e1n\u00ed dal\u0161\u00edch modul\u016f;\n<li class=\"l\"> V k\u00f3du pro ur\u010den\u00ed aplikace exploit\u016f byly p\u0159id\u00e1ny nov\u00e9 sysctl lkrg.smep_panic (ve v\u00fdchoz\u00edm nastaven\u00ed zapnuto) a lkrg.umh_lock (ve v\u00fdchoz\u00edm nastaven\u00ed vypnuto), p\u0159id\u00e1ny dal\u0161\u00ed kontroly bitu SMEP\/WP, zm\u011bn\u011bna logika sledov\u00e1n\u00ed nov\u00fdch \u00faloh v syst\u00e9mu, p\u0159epracov\u00e1na vnit\u0159n\u00ed logika synchronizace s prost\u0159edky \u00faloh, p\u0159id\u00e1na podpora OverlayFS, za\u0159azeno do b\u00edl\u00e9ho seznamu Ubuntu Apport.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51139\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u043e\u0435\u043a\u0442 Openwall \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u043c\u043e\u0434\u0443\u043b\u044f \u044f\u0434\u0440\u0430 LKRG 0.7 (Linux Kernel Runtime Guard), \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0435\u0441\u0430\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0435\u0435 \u044f\u0434\u0440\u043e (\u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438) \u0438\u043b\u0438 \u043f\u043e\u043f\u044b\u0442\u043e\u043a \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u043d\u043e\u043c\u043e\u0447\u0438\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 (\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u043e\u0432). \u041c\u043e\u0434\u0443\u043b\u044c \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u043a\u0430\u043a \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0443\u0436\u0435 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0445 \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u043e\u0432 \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044f\u0445 \u043a\u043e\u0433\u0434\u0430 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430\u0442\u0438\u0447\u043d\u043e \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u044f\u0434\u0440\u043e), \u0442\u0430\u043a \u0438 [&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-36370","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u043e\u0435\u043a\u0442 Openwall \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u043c\u043e\u0434\u0443\u043b\u044f \u044f\u0434\u0440\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-modulya-lkrg-0-7-dlya-zashhity-ot-ekspluatatsii-uyazvimostej-v-yadre-linux\" 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