1. Ubuntu Security Notices
  2. USN-4398-2

USN-4398-2: DBus vulnerability

Publication date

16 June 2020

Overview

DBus could be made to crash if it received specially crafted input.

Releases

Packages

  • dbus - simple interprocess messaging system

Details

USN-4398-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

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.

USN-4398-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

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.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
14.04 trusty libdbus-1-3 –  1.6.18-0ubuntu4.5+esm2
12.04 precise libdbus-1-3 –  1.4.18-1ubuntu1.10

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›