1. Ubuntu Security Notices
  2. USN-4015-2

USN-4015-2: DBus vulnerability

Publication date

12 June 2019

Overview

DBus could allow unintended access to services.

Releases

Packages

  • dbus - simple interprocess messaging system

Details

USN-4015-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Joe Vennix discovered that DBus incorrectly handled DBUS_COOKIE_SHA1
authentication. A local attacker could possibly use this issue to bypass
authentication and connect to DBus servers with elevated privileges.

USN-4015-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Joe Vennix discovered that DBus incorrectly handled DBUS_COOKIE_SHA1
authentication. A local attacker could possibly use this issue to bypass
authentication and connect to DBus servers with elevated privileges.

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 dbus –  1.6.18-0ubuntu4.5+esm1
libdbus-1-3 –  1.6.18-0ubuntu4.5+esm1
12.04 precise dbus –  1.4.18-1ubuntu1.9
libdbus-1-3 –  1.4.18-1ubuntu1.9

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References

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