CVE-2019-15718

Name: CVE-2019-15718
Creator: NVD / NIST
Published: 2019-09-04T12:15:11.17+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2019-15718 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. 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 estimates a 0.51% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.51%

39.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Systemd Project	Systemd	240
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31
Redhat	Openshift Container Platform	4.1
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Eus	8.1
Redhat	Enterprise Linux Eus	8.2
Redhat	Enterprise Linux Eus	8.4
Redhat	Enterprise Linux For Ibm Z Systems 8 S390x	All versions
Redhat	Enterprise Linux For Ibm Z Systems Eus	8.1
Redhat	Enterprise Linux For Ibm Z Systems Eus	8.2
Redhat	Enterprise Linux For Ibm Z Systems Eus	8.4
Redhat	Enterprise Linux For Ibm Z Systems Eus S390x	8.1
Redhat	Enterprise Linux For Ibm Z Systems Eus S390x	8.2
Redhat	Enterprise Linux For Power Little Endian	8.0
Redhat	Enterprise Linux For Power Little Endian Eus	8.1
Redhat	Enterprise Linux For Power Little Endian Eus	8.2
Redhat	Enterprise Linux For Power Little Endian Eus	8.4
Redhat	Enterprise Linux Server Aus	8.2
Redhat	Enterprise Linux Server Aus	8.4
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	8.1
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	8.2
Redhat	Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions	8.4
Redhat	Enterprise Linux Server Tus	8.2
Redhat	Enterprise Linux Server Tus	8.4
Redhat	Enterprise Linux Server Update Services For Sap Solutions	8.1
Redhat	Enterprise Linux Server Update Services For Sap Solutions	8.2
Redhat	Enterprise Linux Server Update Services For Sap Solutions	8.4

References

http://www.openwall.com/lists/oss-security/2019/09/03/1Exploit, Mailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3592Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3941Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1746057Issue Tracking, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/
http://www.openwall.com/lists/oss-security/2019/09/03/1Exploit, Mailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3592Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3941Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1746057Issue Tracking, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/

Timeline

Published: Sep 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-15718?

How severe is CVE-2019-15718?

CVE-2019-15718 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2019-15718?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-15718?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST