CVE-2002-1797 in ChaiVM
Summary
by MITRE
ChaiVM for HP color LaserJet 4500 and 4550 or HP LaserJet 4100 and 8150 does not properly enforce access control restrictions, which could allow local users to add, delete, or modify any services hosted by the ChaiServer.
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Analysis
by VulDB Data Team • 07/03/2024
The vulnerability identified as CVE-2002-1797 affects HP color LaserJet 4500 and 4550 printers alongside HP LaserJet 4100 and 8150 devices that utilize ChaiVM software for printer management. This represents a critical access control flaw that undermines the security posture of these networked printing systems. The ChaiServer component serves as a crucial interface for managing printer services and configurations, making proper access controls essential for maintaining system integrity and preventing unauthorized modifications to print operations.
The technical flaw stems from insufficient access control mechanisms within the ChaiVM implementation that governs the ChaiServer service. When a local attacker gains access to the system, they can exploit this weakness to perform unauthorized operations including adding new services, deleting existing services, or modifying current service configurations. This lack of proper authentication and authorization checks creates a pathway for malicious actors to manipulate the printer's service environment and potentially disrupt printing operations or establish persistent access points.
The operational impact of this vulnerability extends beyond simple service manipulation as it enables attackers to fundamentally alter how the printer operates within a network environment. Local users with access to the system can modify print queue configurations, change service parameters, or even introduce malicious services that could intercept print jobs or redirect them to unauthorized destinations. This capability undermines the trust model of the printer system and could lead to data exfiltration, service disruption, or further compromise of the network through the printer as a potential entry point.
This vulnerability aligns with CWE-284, which addresses improper access control issues in software systems, and represents a classic example of insufficient privilege checking in network services. The flaw demonstrates how printer management systems can become attack vectors when proper access controls are not implemented or enforced. From an ATT&CK perspective, this vulnerability maps to techniques involving privilege escalation and persistence, as attackers can establish unauthorized services that maintain access to the printer system. Organizations should implement comprehensive network segmentation, enforce strict access controls, and regularly audit printer service configurations to prevent exploitation of such weaknesses.
The security implications of this vulnerability highlight the importance of treating networked printing systems as critical infrastructure components requiring proper security hardening. Printer manufacturers and system administrators must ensure that all services running on networked devices implement robust access control mechanisms to prevent unauthorized modifications. Regular security assessments of printer management systems, along with proper network monitoring and access control policies, are essential to protect against exploitation of such access control flaws that could compromise entire network printing environments.