CVE-2019-15718 Affecting systemd package, versions <242-7


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (35th percentile)

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  • Snyk IDSNYK-DEBIAN12-SYSTEMD-1560585
  • published3 Sept 2019
  • disclosed4 Sept 2019

Introduced: 3 Sep 2019

CVE-2019-15718  (opens in a new tab)

How to fix?

Upgrade Debian:12 systemd to version 242-7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Scores

version 3.1