Quote:A new set of security vulnerabilities has been disclosed in the OpenPrinting Common Unix Printing System (CUPS) on Linux systems that could permit remote command execution under certain conditions.

"A remote unauthenticated attacker can silently replace existing printers' (or install new ones) IPP urls with a malicious one, resulting in arbitrary command execution (on the computer) when a print job is started (from that computer)," security researcher Simone Margaritelli said.

CUPS is a standards-based, open-source printing system for Linux and other Unix-like operating systems, including ArchLinux, Debian, Fedora, Red Hat Enterprise Linux (RHEL), ChromeOS, FreeBSD, NetBSD, OpenBSD, openSUSE, and SUSE Linux.

Quote:A recently disclosed vulnerability in the Common Unix Printing System (CUPS) open-source printing system can be exploited by threat actors to launch distributed denial-of-service (DDoS) attacks with a 600x amplification factor.

As Akamai security researchers found, a CVE-2024-47176 security flaw in the cups-browsed daemon that can be chained with three other bugs to gain remote code execution on Unix-like systems via a single UDP packet can also be leveraged to amplify DDoS attacks.

The vulnerability is triggered when an attacker sends a specially crafted packet, tricking a CUPS server into treating a target as a printer to be added.

Each packet sent to vulnerable CUPS servers prompts them to generate larger IPP/HTTP requests aimed at the targeted device. This impacts both the target and the CUPS server, consuming their bandwidth and CPU resources.