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Ubuntu Security Notice USN-7043-1
September 26, 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:

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                    1.28.15-0ubuntu1.3
  cups-filters                    1.28.15-0ubuntu1.3

Ubuntu 20.04 LTS
  cups-browsed                    1.27.4-1ubuntu0.3
  cups-filters                    1.27.4-1ubuntu0.3

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

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

Package Information:
  https://launchpad.net/ubuntu/+source/cups-filters/1.28.15-0ubuntu1.3
  https://launchpad.net/ubuntu/+source/cups-filters/1.27.4-1ubuntu0.3