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Ubuntu 12.04/14.04: USN-4398-2 Critical DBus Denial Of Service

ubuntu
Calendar Grey June 16, 2020
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-7421-3 highlights a severe vulnerability in the Systemd component impacting Ubuntu 18.04 and 20.04, accompanied by significant patches.
DBus could be made to crash if it received specially crafted input.

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.

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu crash DBus

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://ubuntu.com/security/notices/USN-4398-2

https://ubuntu.com/security/notices/USN-4398-1

CVE-2020-12049

Severity
critical
Lowest
Low
Medium
High
Critical

June 16, 2020

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu crash DBus

Package Information

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