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USN-4015-2: DBus vulnerability

12 June 2019

DBus could allow unintended access to services.

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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.

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-4015-1: 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