USN-5704-1: DBus vulnerabilities

Releases

• Ubuntu 22.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

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)

Update instructions

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

Ubuntu 22.10

• dbus - 1.14.0-2ubuntu3
• libdbus-1-3 - 1.14.0-2ubuntu3

Ubuntu 22.04

• dbus - 1.12.20-2ubuntu4.1
• libdbus-1-3 - 1.12.20-2ubuntu4.1

Ubuntu 20.04

• dbus - 1.12.16-2ubuntu2.3
• libdbus-1-3 - 1.12.16-2ubuntu2.3

Ubuntu 18.04

• dbus - 1.12.2-1ubuntu1.4
• libdbus-1-3 - 1.12.2-1ubuntu1.4

Ubuntu 16.04

• dbus - 1.10.6-1ubuntu3.6+esm2
  Available with Ubuntu Pro
• libdbus-1-3 - 1.10.6-1ubuntu3.6+esm2
  Available with Ubuntu Pro

Ubuntu 14.04

• dbus - 1.6.18-0ubuntu4.5+esm3
  Available with Ubuntu Pro
• libdbus-1-3 - 1.6.18-0ubuntu4.5+esm3
  Available with Ubuntu Pro

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

References

• CVE-2022-42010
• CVE-2022-42012
• CVE-2022-42011