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Ubuntu Security Notice USN-4398-2
June 16, 2020
dbus vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM
Summary:
DBus could be made to crash if it received specially crafted input.
Software Description:
– 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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 ESM:
libdbus-1-3 1.6.18-0ubuntu4.5+esm2
Ubuntu 12.04 ESM:
libdbus-1-3 1.4.18-1ubuntu1.10
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://usn.ubuntu.com/4398-2
https://usn.ubuntu.com/4398-1
CVE-2020-12049
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