medium
5.3
CWE
285
Advisory Published
CVE Published
Updated

CVE-2019-15718

First published: Tue Aug 27 2019(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/systemd<0:239-18.el8
0:239-18.el8
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
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

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2019-15718.

  • What is the severity of CVE-2019-15718?

    The severity of CVE-2019-15718 is medium with a CVSS score of 5.3.

  • What is the affected software of CVE-2019-15718?

    The affected software includes systemd versions 240, 243, and earlier, as well as Red Hat Enterprise Linux 8.0, 8.1, 8.2, 8.4, and other related distributions.

  • How can an attacker exploit CVE-2019-15718?

    An attacker can exploit CVE-2019-15718 by calling all DBus methods, even privileged operations, through the exposed DBus interface org.freedesktop.resolve1.

  • Where can I find more information about CVE-2019-15718?

    More information about CVE-2019-15718 can be found at the following references: [GitHub Pull Request](https://github.com/systemd/systemd/pull/13457), [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1748767).

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