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Ubuntu Security Notice USN-5704-1

Ubuntu Security Notice USN-5704-1
Posted Oct 28, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5704-1 - 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. 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. 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.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2022-42010, CVE-2022-42011, CVE-2022-42012
SHA-256 | 3b7661dce0a387bad1abfb33d63f80542dfc66b02ee51a97fa6a98913cd1fcc3

Ubuntu Security Notice USN-5704-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-5704-1
October 27, 2022

dbus vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

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

Summary:

Several security issues were fixed in DBus.

Software Description:
- 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 LTS:
dbus 1.12.20-2ubuntu4.1
libdbus-1-3 1.12.20-2ubuntu4.1

Ubuntu 20.04 LTS:
dbus 1.12.16-2ubuntu2.3
libdbus-1-3 1.12.16-2ubuntu2.3

Ubuntu 18.04 LTS:
dbus 1.12.2-1ubuntu1.4
libdbus-1-3 1.12.2-1ubuntu1.4

Ubuntu 16.04 ESM:
dbus 1.10.6-1ubuntu3.6+esm2
libdbus-1-3 1.10.6-1ubuntu3.6+esm2

Ubuntu 14.04 ESM:
dbus 1.6.18-0ubuntu4.5+esm3
libdbus-1-3 1.6.18-0ubuntu4.5+esm3

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

References:
https://ubuntu.com/security/notices/USN-5704-1
CVE-2022-42010, CVE-2022-42011, CVE-2022-42012

Package Information:
https://launchpad.net/ubuntu/+source/dbus/1.14.0-2ubuntu3
https://launchpad.net/ubuntu/+source/dbus/1.12.20-2ubuntu4.1
https://launchpad.net/ubuntu/+source/dbus/1.12.16-2ubuntu2.3
https://launchpad.net/ubuntu/+source/dbus/1.12.2-1ubuntu1.4
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