CentOS Linux: CVE-2019-15718: Moderate: systemd security, bug fix, and enhancement update (CESA-2019:3592)
Description
In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c (as used by systemd-resolved to connect to the system D-Bus instance), calls sd_bus_set_trusted, which disables access controls for incoming D-Bus messages. An unprivileged user can exploit this by executing D-Bus methods that should be restricted to privileged users, in order to change the system's DNS resolver settings.
Solution(s)
- centos-upgrade-systemd
- centos-upgrade-systemd-container
- centos-upgrade-systemd-container-debuginfo
- centos-upgrade-systemd-debuginfo
- centos-upgrade-systemd-debugsource
- centos-upgrade-systemd-devel
- centos-upgrade-systemd-journal-remote
- centos-upgrade-systemd-journal-remote-debuginfo
- centos-upgrade-systemd-libs
- centos-upgrade-systemd-libs-debuginfo
- centos-upgrade-systemd-pam
- centos-upgrade-systemd-pam-debuginfo
- centos-upgrade-systemd-tests
- centos-upgrade-systemd-tests-debuginfo
- centos-upgrade-systemd-udev
- centos-upgrade-systemd-udev-debuginfo
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