USN-7043-4: cups-filters vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• 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

• cups-browsed - 1.28.15-0ubuntu1.4
• cups-filters - 1.28.15-0ubuntu1.4

Ubuntu 20.04

• 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

• CVE-2024-47176
• CVE-2024-47076

Related notices

• USN-7042-1
• USN-7043-1
• USN-7043-2
• USN-7043-3
• USN-7042-2
• USN-7042-3
• USN-7044-1