CVE-2019-15718
Medium
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.
SeverityMedium
CVSS4.4
Exploit probability—
Product
Systemd
PublishedSep 4, 2019
First seenSep 4, 2019
How to fix
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/
- access.redhat.com/errata/RHSA-2019:3592
- access.redhat.com/errata/RHSA-2019:3941
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| systemd_project systemd | 240 | — |
| fedoraproject fedora | 29, 30, 31 | — |
| redhat openshift_container_platform | 4.1 | — |
| redhat enterprise_linux | 8.0 | — |
| redhat enterprise_linux_eus | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_for_ibm_z_systems_8_s390x | No range specified | — |
| redhat enterprise_linux_for_ibm_z_systems_eus | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_for_ibm_z_systems_eus_s390x | 8.1, 8.2 | — |
| redhat enterprise_linux_for_power_little_endian | 8.0 | — |
| redhat enterprise_linux_for_power_little_endian_eus | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_server_aus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_server_tus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_update_services_for_sap_solutions | 8.1, 8.2, 8.4 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.