{"id":114415,"date":"2024-03-19T00:25:59","date_gmt":"2024-03-18T22:25:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kiddy-modul-yadra-linux-dlya-zashhity-ot-skript-kiddi"},"modified":"2024-03-19T00:25:59","modified_gmt":"2024-03-18T22:25:59","slug":"kiddy-modul-yadra-linux-dlya-zashhity-ot-skript-kiddi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/kiddy-modul-yadra-linux-dlya-zashhity-ot-skript-kiddi","title":{"rendered":"Kiddy \u2014 Linux kodola modulis, lai aizsarg\u0101tu pret skriptu sekot\u0101jiem","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p><a rel=\"nofollow\" href=\"https:\/\/github.com\/milabs\/kiddy\">Kiddy<\/a> &ndash; Linux kodola modulis, kas izstr\u0101d\u0101ts ar m\u0113r\u0137i samazin\u0101t (da\u017e\u0101du) kodola ievainojam\u012bbu ekspluat\u0101cijas riskus.<\/p>\n<p><\/noindex><\/noindex> <\/p>\n<p>Aizsardz\u012bbas meh\u0101nisma pamat\u0101, kas tiek \u012bstenots \u0161aj\u0101 modul\u012b, ir vienk\u0101r\u0161a ideja, ka uzbrukuma proces\u0101 tiek identific\u0113ts uzbrukuma m\u0113r\u0137is. T\u0101d\u0113\u013c, ja apgr\u016btin\u0101m \u0161\u0101du identific\u0113\u0161anu, uzbrukuma realiz\u0113\u0161ana var k\u013c\u016bt iev\u0113rojami sare\u017e\u0123\u012bt\u0101ka, jo daudzos gad\u012bjumos gatavi eksplojti satur da\u017e\u0101du nob\u012b\u017eu (offset) tabulas, kas atbilst m\u0113r\u0137a kodu versij\u0101m.<\/p>\n<p> <noindex><\/p>\n<p>Piem\u0113ram, t\u0101 tas tiek dar\u012bts <a rel=\"nofollow\" href=\"https:\/\/github.com\/xairy\/kernel-exploits\/blob\/master\/CVE-2017-1000112\/poc.c#L91\">CVE-2017-1000112<\/a>. Turpat var redz\u0113t, ka kodu versijas identifik\u0101cija tiek veikta, izmantojot uname.<\/p>\n<p><\/noindex> <\/p>\n<p>Izstr\u0101d\u0101tais modulis ir vienk\u0101r\u0161i \u012bstenojams un \u013cauj:<\/p>\n<ul>\n<li>main\u012bt kodu identifik\u0101ciju;<\/li>\n<li>ierobe\u017eot piek\u013cuvi kodu \u017eurn\u0101lam (dmesg);<\/li>\n<li>ierobe\u017eot piek\u013cuvi da\u017e\u0101m fail\u0113m katalog\u0101 \/proc, kas ar\u012b satur identific\u0113jo\u0161u inform\u0101ciju;<\/li>\n<li>ierobe\u017eot piek\u013cuvi failiem un map\u0113m, kas var satur\u0113t identific\u0113jo\u0161u inform\u0101ciju;<\/li>\n<li>main\u012bt kodu versijas identifik\u0101ciju, pieejamu caur vDSO.<\/li>\n<\/ul>\n<p>Modu\u013ca izstr\u0101des proces\u0101 ir iesp\u0113jams izmantot t\u0101 sauktos &laquo;presetus&raquo;, kas realiz\u0113 da\u017e\u0101du identifik\u0101cijas izmai\u0146u lo\u0123iku. Piem\u0113ram, izmantojot presetu &laquo;windows&raquo;, var ieg\u016bt sekojo\u0161u uzved\u012bbu:<\/p>\n<p><strong>Pirms modu\u013ca iel\u0101des<\/strong><\/p>\n<p> $ .\\\/misc\\\/id.sh ** UNAME identit\u0101tes nopl\u016bdes  &#8212; uname -r    2.6.32-754.35.1.el6.x86_64  &#8212; uname -v    #1 SMP Sat Nov 7 12:42:14 UTC 2020  &#8212; uname -a    Linux localhost.localdomain 2.6.32-754.35.1.el6.x86_64 #1 SMP Sat Nov 7 12:42:14 UTC 2020 x86_64 x86_64 x86_64 GNU\\\/Linux ** PROCFS identit\u0101tes nopl\u016bdes  &#8212; \\\/proc\\\/cmdline    ro root=\\\/dev\\\/mapper\\\/VolGroup00-LogVol00 rd_NO_LUKS no_timer_check console=tty0 console=ttyS0,115200n8 net.ifnames=0 biosdevname=0 LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16  rd_LVM_LV=VolGroup00\\\/LogVol01 rd_LVM_LV=VolGroup00\\\/LogVol00  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet  &#8212; \\\/proc\\\/version    Linux version 2.6.32-754.35.1.el6.x86_64 (mockbuild@x86-02.bsys.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) ) #1 SMP Sat Nov 7 12:42:14 UTC 2020  &#8212; \\\/proc\\\/sys\\\/kernel\\\/version    #1 SMP Sat Nov 7 12:42:14 UTC 2020  &#8212; \\\/proc\\\/sys\\\/kernel\\\/osrelease    2.6.32-754.35.1.el6.x86_64 which: no hostnamectl in (\\\/usr\\\/local\\\/bin:\\\/bin:\\\/usr\\\/bin:\\\/usr\\\/local\\\/sbin:\\\/usr\\\/sbin:\\\/sbin:\\\/home\\\/vagrant\\\/bin)   <\/p>\n<p><strong>P\u0113c modu\u013ca iel\u0101des<\/strong><\/p>\n<p> $ .\\\/misc\\\/id.sh ** UNAME identit\u0101tes nopl\u016bdes  &#8212; uname -r    Windows  &#8212; uname -v    NT 4.0  &#8212; uname -a    Linux localhost.localdomain Windows NT 4.0 x86_64 x86_64 x86_64 GNU\\\/Linux ** PROCFS identit\u0101tes nopl\u016bdes  &#8212; \\\/proc\\\/cmdline    EFIMicrosoftBootbootmgfw.efi  &#8212; \\\/proc\\\/version    Windows NT 4.0  &#8212; \\\/proc\\\/sys\\\/kernel\\\/version    NT 4.0  &#8212; \\\/proc\\\/sys\\\/kernel\\\/osrelease    Windows which: no hostnamectl in (\\\/usr\\\/local\\\/bin:\\\/bin:\\\/usr\\\/bin:\\\/usr\\\/local\\\/sbin:\\\/usr\\\/sbin:\\\/sbin:\\\/home\\\/vagrant\\\/bin)   <\/p>\n<p>Kiddy skripti nep\u0101rvar\u0113s!<\/p>\n<p>Avots: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/17555973\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Kiddy &ndash; \u043c\u043e\u0434\u0443\u043b\u044c \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u044b\u0439 \u0441 \u0446\u0435\u043b\u044c\u044e \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044f \u0440\u0438\u0441\u043a\u043e\u0432 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 (\u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445) \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u044f\u0434\u0440\u0430. \u0412 \u043e\u0441\u043d\u043e\u0432\u0435 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0437\u0430\u0449\u0438\u0442\u044b, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u0434\u0430\u043d\u043d\u043e\u043c \u043c\u043e\u0434\u0443\u043b\u0435, \u043b\u0435\u0436\u0438\u0442 \u043f\u0440\u043e\u0441\u0442\u0430\u044f \u0438\u0434\u0435\u044f, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0430\u0442\u0430\u043a\u0438 \u0442\u0430\u043a \u0438\u043b\u0438 \u0438\u043d\u0430\u0447\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0430\u0442\u0430\u043a\u0438. \u041f\u043e\u044d\u0442\u043e\u043c\u0443, \u0435\u0441\u043b\u0438 \u0437\u0430\u0442\u0440\u0443\u0434\u043d\u0438\u0442\u044c \u0442\u0430\u043a\u0443\u044e \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e, \u043c\u043e\u0436\u043d\u043e \u043a\u0440\u0430\u0442\u043d\u043e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438, \u0442.\u043a. \u0432\u043e \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435 \u0441\u043b\u0443\u0447\u0430\u0435\u0432 [&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-114415","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - 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