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Debian 8: DLA-1762-1 Moderate: Systemd Local Access Control Issues

Two vulnerabilities have been addressed in the systemd components systemd-tmpfiles and pam_systemd.so. . Package : systemd Version : 215-17+deb8u12 CVE ID : CVE-2017-18078 CVE-2019-3842 Two vulnerabilities have been addressed in the systemd components systemd-tmpfiles and pam_systemd.so. CVE-2017-18078 systemd-tmpfiles in systemd attempted to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allowed local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacked write access. CVE-2019-3842 It was discovered that pam_systemd did not properly sanitize the environment before using the XDG_SEAT variable. It was possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allowed for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any". For Debian 8 "Jessie", these problems have been fixed in version 215-17+deb8u12. We recommend that you upgrade your systemd packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS -- mike gabriel aka sunweaver (Debian Developer) fon: +49 (1520) 1976 148 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: This email address is being protected from spambots. You need JavaScript enabled to view it., https://sunweavers.net/ . Several security flaws in systemd addressed in Debian LTS, pertaining to user permission restrictions and variable management vulnerabilities.. Debian Security,Systemd Update,Access Control,Environment Sanitization. . LinuxSecurity.com Team

Apr 24, 2019 Debian LTS