Advisory Published

USN-4398-1: DBus vulnerability

First published: Tue Jun 16 2020(Updated: )

Kevin Backhouse discovered that DBus incorrectly handled file descriptors. A local attacker could possibly use this issue to cause DBus to crash, resulting in a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/dbus<1.12.16-2ubuntu2.1
1.12.16-2ubuntu2.1
=20.04
All of
ubuntu/libdbus-1-3<1.12.16-2ubuntu2.1
1.12.16-2ubuntu2.1
=20.04
All of
ubuntu/dbus<1.12.14-1ubuntu2.1
1.12.14-1ubuntu2.1
=19.10
All of
ubuntu/libdbus-1-3<1.12.14-1ubuntu2.1
1.12.14-1ubuntu2.1
=19.10
All of
ubuntu/dbus<1.12.2-1ubuntu1.2
1.12.2-1ubuntu1.2
=18.04
All of
ubuntu/libdbus-1-3<1.12.2-1ubuntu1.2
1.12.2-1ubuntu1.2
=18.04
All of
ubuntu/dbus<1.10.6-1ubuntu3.6
1.10.6-1ubuntu3.6
=16.04
All of
ubuntu/libdbus-1-3<1.10.6-1ubuntu3.6
1.10.6-1ubuntu3.6
=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for the DBus vulnerability?

    The vulnerability ID for the DBus vulnerability is USN-4398-1.

  • What is the impact of the DBus vulnerability?

    The DBus vulnerability can allow a local attacker to cause DBus to crash, resulting in a denial of service.

  • Which software versions and packages are affected by the DBus vulnerability?

    The DBus vulnerability affects Ubuntu 20.04 with dbus package version 1.12.16-2ubuntu2.1, Ubuntu 20.04 with libdbus-1-3 package version 1.12.16-2ubuntu2.1, Ubuntu 19.10 with dbus package version 1.12.14-1ubuntu2.1, Ubuntu 19.10 with libdbus-1-3 package version 1.12.14-1ubuntu2.1, Ubuntu 18.04 with dbus package version 1.12.2-1ubuntu1.2, Ubuntu 18.04 with libdbus-1-3 package version 1.12.2-1ubuntu1.2, Ubuntu 16.04 with dbus package version 1.10.6-1ubuntu3.6, and Ubuntu 16.04 with libdbus-1-3 package version 1.10.6-1ubuntu3.6.

  • How can I fix the DBus vulnerability?

    To fix the DBus vulnerability, you need to update the affected packages to the specified remedy versions provided by Ubuntu.

  • Where can I find more information about the DBus vulnerability?

    You can find more information about the DBus vulnerability on the Ubuntu security website and the provided references.

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