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USN-4398-2: DBus vulnerability

16 June 2020

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

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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.

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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

References

Related notices

  • USN-4398-1: dbus-user-session, dbus, dbus-x11, libdbus-1-dev, libdbus-1-3-udeb, dbus-1-doc, dbus-tests, dbus-udeb, libdbus-1-3

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Further reading