Ubuntu Security Update USN-4398-1: DBus vulnerability

[LinuxBot]

dbus vulnerability


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

• Ubuntu 20.04 LTS
• Ubuntu 19.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS

Summary


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

Software Description

• dbus - simple interprocess messaging system

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 20.04 LTS
dbus - 1.12.16-2ubuntu2.1
libdbus-1-3 - 1.12.16-2ubuntu2.1
Ubuntu 19.10
dbus - 1.12.14-1ubuntu2.1
libdbus-1-3 - 1.12.14-1ubuntu2.1
Ubuntu 18.04 LTS
dbus - 1.12.2-1ubuntu1.2
libdbus-1-3 - 1.12.2-1ubuntu1.2
Ubuntu 16.04 LTS
dbus - 1.10.6-1ubuntu3.6
libdbus-1-3 - 1.10.6-1ubuntu3.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2020-12049

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