[USN-7043-4] cups-filters vulnerabilities

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==========================================================================
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