{"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\/fr\/blog\/news\/uyazvimost-v-samba-i-mit-heimdal-kerberos-privodyashhaya-k-perepolneniyu-bufera","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans Samba et MIT\/Heimdal Kerberos, entra\u00eenant un d\u00e9bordement de tampon","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Des mises \u00e0 jour correctives pour les versions 4.17.3, 4.16.7 et 4.15.12 de Samba ont \u00e9t\u00e9 publi\u00e9es, corrigeant une vuln\u00e9rabilit\u00e9 (CVE-2022-42898) dans les biblioth\u00e8ques Kerberos, entra\u00eenant un d\u00e9passement d'entier et un \u00e9criture de donn\u00e9es hors de la m\u00e9moire allou\u00e9e lors du traitement des param\u00e8tres PAC (Privileged Attribute Certificate) envoy\u00e9s par un utilisateur authentifi\u00e9. La publication des mises \u00e0 jour des paquets dans les distributions peut \u00eatre suivie sur les pages : Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD. <\/p>\n

En plus de Samba, le probl\u00e8me se manifeste \u00e9galement dans les paquets avec MIT Kerberos et Heimdal Kerberos. Dans le rapport de vuln\u00e9rabilit\u00e9 du projet Samba, la menace n'est pas d\u00e9taill\u00e9e, mais le rapport de MIT Kerberos indique que la vuln\u00e9rabilit\u00e9 pourrait entra\u00eener une ex\u00e9cution de code \u00e0 distance. L'exploitation de la vuln\u00e9rabilit\u00e9 n'est possible que sur des syst\u00e8mes 32 bits. <\/p>\n

Le probl\u00e8me concerne les configurations avec KDC (Key Distribution Center) ou kadmind. Dans les configurations sans Active Directory, la vuln\u00e9rabilit\u00e9 se manifeste \u00e9galement sur les fichiers serveurs<\/a> Samba utilisant Kerberos. Le probl\u00e8me est caus\u00e9 par une erreur dans la fonction krb5_parse_pac(), qui calcule incorrectement la taille du tampon utilis\u00e9 lors de l'analyse des champs PAC. Sur les syst\u00e8mes 32 bits, lors du traitement de PAC sp\u00e9cialement con\u00e7u, cette erreur pouvait entra\u00eener le placement d'un bloc de 16 octets envoy\u00e9 par l'attaquant en dehors de la m\u00e9moire allou\u00e9e.
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Source : 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 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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-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\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\udd47Vuln\u00e9rabilit\u00e9 dans Samba et MIT\/Heimdal Kerberos, entra\u00eenant un d\u00e9passement de tampon | ProHoster","description":"Des mises \u00e0 jour correctives pour les versions 4.17.3, 4.16.7 et 4.15.12 de Samba ont \u00e9t\u00e9 publi\u00e9es, corrigeant une vuln\u00e9rabilit\u00e9 (CVE-2022-42898) dans les biblioth\u00e8ques Kerberos, entra\u00eenant un d\u00e9passement d'entier et un \u00e9criture de donn\u00e9es 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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 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