{"id":105381,"date":"2022-10-25T21:36:42","date_gmt":"2022-10-25T19:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-samba-privodyashhie-k-perepolneniyu-bufera-i-vyhodu-za-graniczu-bazovogo-kataloga"},"modified":"2022-10-25T21:36:42","modified_gmt":"2022-10-25T19:36:42","slug":"uyazvimosti-v-samba-privodyashhie-k-perepolneniyu-bufera-i-vyhodu-za-graniczu-bazovogo-kataloga","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/uyazvimosti-v-samba-privodyashhie-k-perepolneniyu-bufera-i-vyhodu-za-graniczu-bazovogo-kataloga","title":{"rendered":"Zranitelnosti v Samb\u011b vedouc\u00ed k p\u0159ete\u010den\u00ed z\u00e1sobn\u00edku a p\u0159\u00edstupu mimo z\u00e1kladn\u00ed adres\u00e1\u0159","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byly vyd\u00e1ny opravy verz\u00ed Samba 4.17.2, 4.16.6 a 4.15.11, kter\u00e9 odstra\u0148uj\u00ed dv\u011b zranitelnosti. Aktualizace bal\u00ed\u010dk\u016f v distribuc\u00edch lze sledovat na str\u00e1nk\u00e1ch: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD.    <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-3437 \u2014 p\u0159ete\u010den\u00ed vyrovn\u00e1vac\u00ed pam\u011bti ve funkc\u00edch unwrap_des() a unwrap_des3(), poskytovan\u00fdch knihovnou GSSAPI z bal\u00edku Heimdal (dod\u00e1v\u00e1 se jako sou\u010d\u00e1st Samba od verze 4.0). Zneu\u017eit\u00ed zranitelnosti je mo\u017en\u00e9 zasl\u00e1n\u00edm speci\u00e1ln\u011b vytvo\u0159en\u00e9ho paketu na syst\u00e9my, kter\u00e9 pou\u017e\u00edvaj\u00ed GSSAPI. Nap\u0159\u00edklad probl\u00e9m se projevuje v implementaci klienta a souborov\u00e9ho <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-los-angeles\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3866\">serveru<\/a> syst\u00e9mu zalo\u017een\u00e9ho na protokolu SMB1, p\u0159i pou\u017eit\u00ed DCE\/RPC a v \u0159adi\u010di dom\u00e9ny Active Directory. Syst\u00e9my sestaven\u00e9 s MIT Kerberos (\u2014with-system-mitkrb5) nejsou tomuto probl\u00e9mu vystaveny.\n<li class=\"l\"> CVE-2022-3592 \u2014 mo\u017enost vybo\u010den\u00ed za hranice exportovan\u00e9ho adres\u00e1\u0159e a p\u0159\u00edstupu k jak\u00e9mukoli souboru na <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-newyork\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2728\">serveru<\/a> zprost\u0159edkovan\u00e9 manipulac\u00ed se symbolick\u00fdmi odkazy. Probl\u00e9m se projevuje pouze ve verzi Samba 4.17 a je zp\u016fsoben chybou v nov\u00e9m k\u00f3du pro zpracov\u00e1n\u00ed symbolick\u00fdch odkaz\u016f v u\u017eivatelsk\u00e9m prostoru (v k\u00f3du chyb\u011bl kontrola, zda se c\u00edlov\u00fd adres\u00e1\u0159 odkazu nach\u00e1z\u00ed za hranic\u00ed exportovan\u00e9ho adres\u00e1\u0159e). Zranitelnost m\u016f\u017ee b\u00fdt zneu\u017eita klientem, kter\u00fd m\u00e1 pr\u00e1va k z\u00e1pisu do exportovan\u00e9ho odd\u00edlu, kter\u00fd je poskytov\u00e1n prost\u0159ednictv\u00edm protokol\u016f SMB1 nebo NFS, umo\u017e\u0148uj\u00edc\u00edch vytv\u00e1\u0159en\u00ed symbolick\u00fdch odkaz\u016f.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57978\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.17.2, 4.16.6 \u0438 4.15.11 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0434\u0432\u0443\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412\u044b\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u043e\u0441\u043b\u0435\u0434\u0438\u0442\u044c \u043d\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430\u0445: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD. CVE-2022-3437 &#8212; \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u0445 unwrap_des() \u0438 unwrap_des3(), \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0445 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 GSSAPI \u0438\u0437 \u043f\u0430\u043a\u0435\u0442\u0430 Heimdal (\u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432\u0435 Samba, \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0438 4.0). \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\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-105381","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=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.17.2, 4.16.6 \u0438 4.15.11 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0434\u0432\u0443\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439.\" \/>\n\t<meta name=\"robots\" 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