VTA-004495 – Critical Linux CUPS Printing System Flaws Could Allow Remote Command Execution

A critical vulnerability has been identified in CUPS, a widely used printing system, that could potentially allow remote code execution. Attackers could exploit this vulnerability by sending specially crafted print jobs to vulnerable systems, potentially leading to data theft or system compromise. While the impact might be limited for some configurations, organizations using CUPS should prioritize applying the necessary patches to mitigate the risk. The incident underscores the importance of ongoing security vigilance and the need for vendors to address vulnerabilities promptly to protect their users.

Severity:
Medium

Attack Surface:
IoT, Others, Remote Access Service, Web Browser

Tactics:
Defense Evasion, Execution, Impact, Initial Access

References:
1. https://www.evilsocket.net/2024/09/26/Attacking-UNIX-systems-via-CUPS-Part-I/

SuperPRO’s Threat Countermeasures Procedures: 
1. Install the latest patches from your Linux distribution to address the vulnerabilities (CVE-2024-47176, CVE-2024-47076, CVE-2024-47175, CVE-2024-47177).
2. If not necessary, disable UDP port 631 to prevent external access to the CUPS service.
3. Ensure that CUPS is configured with default settings or apply security-hardened configurations.
4. Regularly monitor system logs for any signs of unauthorized access or suspicious activity related to CUPS.

Contributed by: Syaff