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Ubuntu Security Notice USN-4015-2

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Ubuntu Security Notice USN-4015-2
June 12, 2019

dbus vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM


DBus could allow unintended access to services.

Software Description:
- dbus: simple interprocess messaging system


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:

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

Ubuntu 14.04 ESM:
dbus 1.6.18-0ubuntu4.5+esm1
libdbus-1-3 1.6.18-0ubuntu4.5+esm1

Ubuntu 12.04 ESM:
dbus 1.4.18-1ubuntu1.9
libdbus-1-3 1.4.18-1ubuntu1.9

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


khalil shreateh

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