CVE-2024-47176 Information

Description

CUPS is a standards-based open-source printing system and cups-browsed contains network printing functionality including but not limited to auto-discovering print services and shared printers. cups-browsed binds to INADDR_ANY:631 causing it to trust any packet from any source and can cause the Get-Printer-Attributes IPP request to an attacker controlled URL.

Due to the service binding to :631 ( INADDR_ANY ) multiple bugs in cups-browsed can be exploited in sequence to introduce a malicious printer to the system. This chain of exploits ultimately enables an attacker to execute arbitrary commands remotely on the target machine without authentication when a print job is started. This poses a significant security risk over the network. Notably this vulnerability is particularly concerning as it can be exploited from the public internet potentially exposing a vast number of systems to remote attacks if their CUPS services are enabled.

Reference

https://github.com/OpenPrinting/cups-browsed/security/advisories/GHSA-rj88-6mr5-rcw8 https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-p9rh-jxmq-gq47 https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-w63j-6g73-wmg5 https://github.com/OpenPrinting/libppd/security/advisories/GHSA-7xfx-47qg-grp6 https://github.com/OpenPrinting/cups-browsed/blob/master/daemon/cups-browsed.c#L13992 https://www.cups.org https://www.evilsocket.net/2024/09/26/Attacking-UNIX-systems-via-CUPS-Part-I