Vulnerability in Systemd Project

CVE-2019-15718

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.

EPSS: 0.005 (40.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

References

  • cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
  • cve@mitre.org (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
  • cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
  • cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
  • cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory, Issue Tracking)
  • cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-15718?
CVE-2019-15718 is a medium-severity vulnerability in Systemd Project. CVSS score: 4.4/10. Published 2019-09-04.
How severe is CVE-2019-15718?
Medium severity. CVSS v3 base score is 4.4 out of 10.