{"id":87780,"date":"2020-07-10T01:42:17","date_gmt":"2020-07-09T23:42:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-libc-i-ipv6-steke-freebsd"},"modified":"2020-07-10T01:42:17","modified_gmt":"2020-07-09T23:42:17","slug":"uyazvimosti-v-libc-i-ipv6-steke-freebsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimosti-v-libc-i-ipv6-steke-freebsd","title":{"rendered":"Vuln\u00e9rabilit\u00e9s dans libc et la pile IPv6 de FreeBSD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Plusieurs vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans FreeBSD, permettant \u00e0 un utilisateur local d'augmenter ses privil\u00e8ges dans le syst\u00e8me :<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001968.html\">CVE-2020-7458<\/a><\/noindex> \u2014 vuln\u00e9rabilit\u00e9 dans le m\u00e9canisme posix_spawnp, fourni par libc pour la cr\u00e9ation de processus, exploit\u00e9e en sp\u00e9cifiant une valeur trop \u00e9lev\u00e9e dans la variable d'environnement PATH. Cette vuln\u00e9rabilit\u00e9 peut entra\u00eener l'\u00e9criture de donn\u00e9es en dehors de la zone m\u00e9moire r\u00e9serv\u00e9e pour la pile, permettant de r\u00e9\u00e9crire le contenu des tampons suivants avec une valeur contr\u00f4l\u00e9e.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001970.html\">CVE-2020-7457<\/a><\/noindex> \u2014 vuln\u00e9rabilit\u00e9 dans la pile IPv6, permettant \u00e0 un utilisateur local de provoquer l'ex\u00e9cution de son code au niveau du noyau en manipulant l'option IPV6_2292PKTOPTIONS pour un socket r\u00e9seau.\n<li class=\"l\"> R\u00e9solus <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001969.html\">deux vuln\u00e9rabilit\u00e9s<\/a><\/noindex> (CVE-2020-12662, CVE-2020-12663) dans le serveur DNS fourni <noindex><a rel=\"nofollow\" href=\"https:\/\/nlnetlabs.nl\/projects\/unbound\">Unbound<\/a><\/noindex>, permettant de provoquer un d\u00e9ni de service \u00e0 distance lors de l'acc\u00e8s \u00e0 un serveur contr\u00f4l\u00e9 par un attaquant ou d'utiliser le serveur DNS comme amplificateur de trafic lors d'attaques DDoS.\n<\/ul>\n<p>De plus, trois probl\u00e8mes non li\u00e9s \u00e0 la s\u00e9curit\u00e9 (errata) ont \u00e9t\u00e9 corrig\u00e9s, qui peuvent entra\u00eener un plantage du noyau lors de l'utilisation du pilote <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001967.html\">mps<\/a><\/noindex> (lors de l'ex\u00e9cution de la commande sas2ircu), du sous-syst\u00e8me <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001966.html\">LinuxKPI<\/a><\/noindex> (lors du rediriger X11) et de l'hyperviseur <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-July\/001965.html\">bhyve<\/a><\/noindex> (lors du passement d'appareils PCI).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53317\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435: CVE-2020-7458 &#8212; \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0435 posix_spawnp, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u043c \u0432 libc \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u0430\u044f \u0447\u0435\u0440\u0435\u0437 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435 \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 PATH. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u044b \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438, \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0439 \u043f\u043e\u0434 \u0441\u0442\u0435\u043a, \u0438 \u0434\u0430\u0451\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u0430\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0440\u0430\u0441\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0441\u043b\u0435\u0434\u043e\u043c [&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-87780","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in 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