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Fencer Intel
medium 4.4

CVE-2019-15718 json

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-Bu…

published 7y ago modified 4mo ago also EUVD-2019-6654

cvss
4.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

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.

Patch / fix

  • systemd Debian 14, Debian 13, Debian 12 242-7

debian advisories DEBIAN-CVE-2019-15718

  • systemd Ubuntu 18.04 LTS 237-3ubuntu10.28

ubuntu advisories UBUNTU-CVE-2019-15718

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • systemd RHEL 8 239-18.el8
  • systemd-pam RHEL 8 239-18.el8
  • systemd-libs RHEL 8 239-18.el8
  • systemd-udev RHEL 8 239-18.el8
  • systemd-tests RHEL 8 239-18.el8
  • systemd-container RHEL 8 239-18.el8
  • systemd-journal-remote RHEL 8 239-18.el8

red hat advisories RHSA-2019:3592

  • systemd Arch Linux 243.0-1

arch linux advisories AVG-1035

Is CVE-2019-15718 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-15718 updated cvss 5.3

systemd: systemd-resolved allows unprivileged users to configure DNS

  • Red Hat Enterprise Linux BaseOS (v. 8) systemd 239-18.el8, systemd-pam 239-18.el8, systemd-libs 239-18.el8, systemd-udev 239-18.el8, systemd-tests 239-18.el8, systemd-container 239-18.el8, +1 more
    fixed: vendor fix “Disable systemd-resolved service by using `sudo systemctl disable systemd-resolved`.” RHSA-2019:3592
  • Red Hat OpenShift Container Platform 4
    fixed: vendor fix “Disable systemd-resolved service by using `sudo systemctl disable systemd-resolved`.” RHSA-2019:3941
  • Red Hat Enterprise Linux 7 systemd, libgudev1, systemd-libs, systemd-sysv, systemd-python, systemd-networkd, +2 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • openwall.com http://www.openwall.com/lists/oss-security/2019/09/03/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 2.0 3.6 AV:L/AC:L/Au:N/C:P/I:P/A:N

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.