1. Ubuntu Security Notices
  2. USN-5704-1

USN-5704-1: DBus vulnerabilities

Publication date

27 October 2022

Overview

Several security issues were fixed in DBus.

Releases

Packages

  • dbus - simple interprocess messaging system

Details

It was discovered that DBus incorrectly handled messages with invalid type
signatures. A local attacker could possibly use this issue to cause DBus to
crash, resulting in a denial of service. (CVE-2022-42010)

It was discovered that DBus was incorrectly validating the length of arrays of
fixed-length items. A local attacker could possibly use this issue to cause
DBus to crash, resulting in a denial of service. (CVE-2022-42011)

It was discovered that DBus incorrectly handled the body DBus message with
attached file descriptors. A local attacker could possibly use this issue to
cause DBus to crash, resulting in a denial of service. (CVE-2022-42012)

It was discovered that DBus incorrectly handled messages with invalid type
signatures. A local attacker could possibly use this issue to cause DBus to
crash, resulting in a denial of service. (CVE-2022-42010)

It was discovered that DBus was incorrectly validating the length of arrays of
fixed-length items. A local attacker could possibly use this issue to cause
DBus to crash, resulting in a denial of service. (CVE-2022-42011)

It was discovered that DBus incorrectly handled the body DBus message with
attached file descriptors. A local attacker could possibly use this issue to
cause DBus to crash, resulting in a denial of service. (CVE-2022-42012)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.10 kinetic dbus –  1.14.0-2ubuntu3
libdbus-1-3 –  1.14.0-2ubuntu3
22.04 jammy dbus –  1.12.20-2ubuntu4.1
libdbus-1-3 –  1.12.20-2ubuntu4.1
20.04 focal dbus –  1.12.16-2ubuntu2.3
libdbus-1-3 –  1.12.16-2ubuntu2.3
18.04 bionic dbus –  1.12.2-1ubuntu1.4
libdbus-1-3 –  1.12.2-1ubuntu1.4
16.04 xenial dbus –  1.10.6-1ubuntu3.6+esm2  
libdbus-1-3 –  1.10.6-1ubuntu3.6+esm2  
14.04 trusty dbus –  1.6.18-0ubuntu4.5+esm3  
libdbus-1-3 –  1.6.18-0ubuntu4.5+esm3  

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References

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