==========================================================================
Ubuntu Security Notice USN-7043-4
October 09, 2024

cups-filters vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

cups-filters could be made to run programs if it received specially crafted
network traffic.

Software Description:
- cups-filters: OpenPrinting CUPS Filters

Details:

USN-7043-1 fixed vulnerabilities in cups-filters. This update improves the
fix for CVE-2024-47176 by removing support for the legacy CUPS printer
discovery protocol entirely.

Original advisory details:

 Simone Margaritelli discovered that the cups-filters cups-browsed
 component could be used to create arbitrary printers from outside the
 local network. In combination with issues in other printing components, a
 remote attacker could possibly use this issue to connect to a system,
 created manipulated PPD files, and execute arbitrary code when a printer
 is used. This update disables support for the legacy CUPS printer
 discovery protocol. (CVE-2024-47176)
  Simone Margaritelli discovered that cups-filters incorrectly sanitized IPP
 data when creating PPD files. A remote attacker could possibly use this
 issue to manipulate PPD files and execute arbitrary code when a printer is
 used. (CVE-2024-47076)

Update instructions:

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

Ubuntu 22.04 LTS
  cups-browsed                    1.28.15-0ubuntu1.4
  cups-filters                    1.28.15-0ubuntu1.4

Ubuntu 20.04 LTS
  cups-browsed                    1.27.4-1ubuntu0.4
  cups-filters                    1.27.4-1ubuntu0.4

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7043-4
  https://ubuntu.com/security/notices/USN-7043-3
  https://ubuntu.com/security/notices/USN-7043-2
  https://ubuntu.com/security/notices/USN-7043-1
  CVE-2024-47076, CVE-2024-47176

Package Information:
  https://launchpad.net/ubuntu/+source/cups-filters/1.28.15-0ubuntu1.4
  https://launchpad.net/ubuntu/+source/cups-filters/1.27.4-1ubuntu0.4