==========================================================================
Ubuntu Security Notice USN-6844-1
June 24, 2024
cups vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
CUPS could be made to arbitrary chmod paths with specially
crafted configuration file.
Software Description:
- cups: Common UNIX Printing System(tm)
Details:
Rory McNamara discovered that when starting the cupsd server with a
Listen configuration item, the cupsd process fails to validate if
bind call passed. An attacker could possibly trick cupsd to perform
an arbitrary chmod of the provided argument, providing world-writable
access to the target.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
  cups                            2.4.7-1.2ubuntu7.1
Ubuntu 23.10
  cups                            2.4.6-0ubuntu3.1
Ubuntu 22.04 LTS
  cups                            2.4.1op1-1ubuntu4.9
Ubuntu 20.04 LTS
  cups                            2.3.1-9ubuntu1.7
Ubuntu 18.04 LTS
  cups                            2.2.7-1ubuntu2.10+esm4
                                  Available with Ubuntu Pro
Ubuntu 16.04 LTS
  cups                            2.1.3-4ubuntu0.11+esm6
                                  Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
  https://ubuntu.com/security/notices/USN-6844-1
  CVE-2024-35235
Package Information:
  https://launchpad.net/ubuntu/+source/cups/2.4.7-1.2ubuntu7.1
  https://launchpad.net/ubuntu/+source/cups/2.4.6-0ubuntu3.1
  https://launchpad.net/ubuntu/+source/cups/2.4.1op1-1ubuntu4.9
  https://launchpad.net/ubuntu/+source/cups/2.3.1-9ubuntu1.7