{"id":99255,"date":"2021-02-24T16:22:40","date_gmt":"2021-02-24T14:22:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-vo-freebsd-pozvolyayushhie-obojti-ogranicheniya-jail-okruzhenij"},"modified":"2021-02-24T16:22:40","modified_gmt":"2021-02-24T14:22:40","slug":"uyazvimosti-vo-freebsd-pozvolyayushhie-obojti-ogranicheniya-jail-okruzhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/uyazvimosti-vo-freebsd-pozvolyayushhie-obojti-ogranicheniya-jail-okruzhenij","title":{"rendered":"Vulnerabilities in FreeBSD allowing circumvention of jail environment restrictions","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Two vulnerabilities have been identified in the FreeBSD project's jail isolated environment system:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2020-25582 \u2014 a vulnerability in the implementation of the system call jail_attach, which is intended for attaching external processes to existing jail environments. The issue occurs during the jail_attach call using commands like jexec or killall, allowing a privileged process isolated within the jail to change its root directory and gain full access to all files and directories in the system.\n<li class=\"l\"> CVE-2020-25581 \u2014 a race condition when removing processes using the system call jail_remove, allowing a privileged process running inside the jail to avoid deletion upon the jail's termination and gain full access to the system through devfs when subsequently starting the jail with the same root directory, taking advantage of the moment when devfs is already mounted for the jail but isolation rules have not yet been applied.    <\/ul>\n<p>Additionally, a vulnerability (CVE-2020-25580) is noted in the PAM module pam_login_access, responsible for handling the login_access file, which defines user and group access rules applied during system login (by default, login is allowed through console, sshd, and telnetd). This vulnerability allows users to bypass login_access restrictions and log in despite the existence of denying rules.    <\/p>\n<p>The vulnerabilities have been fixed in the 13.0-STABLE, 12.2-STABLE, and 11.4-STABLE branches, as well as in the corrective updates FreeBSD 12.2-RELEASE-p4 and 11.4-RELEASE-p8.<br \/>\n<br \/>Source: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54642\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c FreeBSD \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0439 jail \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2020-25582 &#8212; \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0433\u043e \u0432\u044b\u0437\u043e\u0432\u0430 jail_attach, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043f\u0440\u0438\u043a\u0440\u0435\u043f\u043b\u0435\u043d\u0438\u044f \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u043a \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u043c jail-\u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f\u043c. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u0437\u043e\u0432\u0430 jail_attach \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043a\u043e\u043c\u0430\u043d\u0434 jexec \u0438\u043b\u0438 killall, \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443, \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u0432\u043d\u0443\u0442\u0440\u0438 jail, \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0440\u043d\u0435\u0432\u043e\u0439 \u043a\u0430\u0442\u0430\u043b\u043e\u0433 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a\u043e [&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-99255","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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