{"id":105611,"date":"2022-11-17T15:36:54","date_gmt":"2022-11-17T13:36:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera"},"modified":"2022-11-17T15:36:54","modified_gmt":"2022-11-17T13:36:54","slug":"uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera","title":{"rendered":"Sebezhet\u0151s\u00e9g a Samba \u00e9s a MIT\/Heimdal Kerberos rendszerekben, amely buffert\u00falcsordul\u00e1shoz vezet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelent a Samba 4.17.3, 4.16.7 \u00e9s 4.15.12 csomagok jav\u00edt\u00f3kiad\u00e1sa, amely megsz\u00fcnteti a Kerberos k\u00f6nyvt\u00e1rakat \u00e9rint\u0151 s\u00e9r\u00fcl\u00e9kenys\u00e9get (CVE-2022-42898), amely eg\u00e9sz sz\u00e1mok t\u00falcsordul\u00e1s\u00e1t \u00e9s adat\u00edr\u00e1st okozhat a foglalt mem\u00f3ria hat\u00e1rain t\u00fal PAC (Privileged Attribute Certificate) param\u00e9terek kezel\u00e9sekor, amelyeket hiteles\u00edtett felhaszn\u00e1l\u00f3 k\u00fcld\u00f6tt. A csomagfriss\u00edt\u00e9sek publik\u00e1l\u00e1s\u00e1t a k\u00f6vetkez\u0151 disztrib\u00faci\u00f3k oldalain lehet nyomon k\u00f6vetni: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD. <\/p>\n

A Samba mellett a probl\u00e9ma a MIT Kerberos \u00e9s Heimdal Kerberos csomagokban is megjelenik. A Samba projekt s\u00e9r\u00fcl\u00e9kenys\u00e9gi jelent\u00e9s\u00e9ben a fenyeget\u00e9s nem r\u00e9szletezett, de a MIT Kerberos jelent\u00e9se szerint a s\u00e9r\u00fcl\u00e9kenys\u00e9g t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1sra vezethet. A s\u00e9r\u00fcl\u00e9kenys\u00e9g kihaszn\u00e1l\u00e1sa csak 32 bites rendszereken lehets\u00e9ges. <\/p>\n

A probl\u00e9ma a KDC (Key Distribution Center) vagy kadmind konfigur\u00e1ci\u00f3kat \u00e9rinti. Active Directory n\u00e9lk\u00fcl a s\u00e9r\u00fcl\u00e9kenys\u00e9g a Kerberos-t haszn\u00e1l\u00f3 f\u00e1jlokban is megjelenik. szervereken<\/a> A Samba, amely Kerberos-t haszn\u00e1l, \u00e9rintett. A probl\u00e9ma a krb5_parse_pac() funkci\u00f3 hib\u00e1j\u00e1b\u00f3l ad\u00f3dik, amely helytelen\u00fcl sz\u00e1molta ki a PAC mez\u0151k elemz\u00e9s\u00e9hez haszn\u00e1lt puffer m\u00e9ret\u00e9t. 32 bites rendszereken a speci\u00e1lisan kialak\u00edtott PAC feldolgoz\u00e1sa sor\u00e1n a hiba a t\u00e1mad\u00f3 \u00e1ltal k\u00fcld\u00f6tt 16 b\u00e1jtos blokk a megadott puffer hat\u00e1rain t\u00falra helyez\u00e9s\u00e9hez vezethet.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 4.17.3, 4.16.7 \u0438 4.15.12 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2022-42898) \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 Kerberos, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u044b \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 PAC (Privileged Attribute Certificate), \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c. \u041f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044e \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. \u041a\u0440\u043e\u043c\u0435 Samba […]<\/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-105611","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\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\udd47 S\u00e9r\u00fcl\u00e9kenys\u00e9g a Samba \u00e9s MIT\/Heimdal Kerberos-ban, amely puffert\u00falcsordul\u00e1shoz vezet | ProHoster","description":"Megjelent a Samba 4.17.3, 4.16.7 \u00e9s 4.15.12 csomagok jav\u00edt\u00f3kiad\u00e1sa, amely megsz\u00fcnteti a Kerberos k\u00f6nyvt\u00e1rakat \u00e9rint\u0151 s\u00e9r\u00fcl\u00e9kenys\u00e9get (CVE-2022-42898), amely eg\u00e9sz sz\u00e1mok t\u00falcsordul\u00e1s\u00e1t \u00e9s adat\u00edr\u00e1st okozott a foglalt mem\u00f3ria hat\u00e1rain t\u00fal.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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 \u0432 Samba \u0438 MIT\/Heimdal Kerberos, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0431\u0443\u0444\u0435\u0440\u0430 | ProHoster","og:description":"\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 4.17.3, 4.16.7 \u0438 4.15.12 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2022-42898) \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 Kerberos, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u044b.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera","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":"2022-11-17T13:36:54+00:00","article:modified_time":"2022-11-17T13:36:54+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\/hu\/wp-json\/wp\/v2\/posts\/105611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=105611"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/105611\/revisions"}],"predecessor-version":[{"id":164425,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/105611\/revisions\/164425"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=105611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=105611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=105611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}