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

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mail: sunweaver@debian.org, https://sunweavers.net/