libgudev1, systemd security update

CentOS Errata and Security Advisory CESA-2019:2091

The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.

Security Fix(es):

• systemd: line splitting via fgets() allows for state injection during daemon-reexec (CVE-2018-15686)

• systemd: out-of-bounds read when parsing a crafted syslog message (CVE-2018-16866)

• systemd: kills privileged process if unprivileged PIDFile was tampered (CVE-2018-16888)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2019-August/032419.html

Affected packages:
libgudev1
libgudev1-devel
systemd
systemd-devel
systemd-journal-gateway
systemd-libs
systemd-networkd
systemd-python
systemd-resolved
systemd-sysv

Upstream details at:
https://access.redhat.com/errata/RHSA-2019:2091