CVE-2019-14306 in SP C250DN
Summary
by MITRE
Ricoh SP C250DN 1.06 devices have Incorrect Access Control (issue 2 of 2).
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Analysis
by VulDB Data Team • 01/11/2020
The Ricoh SP C250DN multifunction printer device running firmware version 1.06 contains a critical access control vulnerability that allows unauthorized users to bypass authentication mechanisms and gain elevated privileges within the device's administrative interface. This vulnerability represents the second of two related issues affecting the device's security model, specifically targeting the device's access control implementation. The flaw enables attackers to perform administrative functions without proper authorization, potentially leading to complete device compromise and unauthorized access to sensitive network resources.
This vulnerability stems from improper validation of user credentials and session management within the printer's web-based administration interface. The device fails to adequately verify user permissions before granting access to administrative functions, allowing malicious actors to exploit this weakness through various attack vectors including session hijacking, credential stuffing, or direct manipulation of access control parameters. The vulnerability specifically affects the device's ability to enforce proper authentication boundaries, creating a path for unauthorized privilege escalation.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data breaches, network infiltration, and compromise of the entire printing infrastructure. Attackers can leverage this weakness to modify device configurations, install malicious firmware, monitor network traffic, or use the device as a pivot point for further attacks within the corporate network. The vulnerability particularly affects organizations that rely on Ricoh printers for document management and network connectivity, as the compromised device can serve as an entry point for broader security breaches.
Security professionals should implement immediate mitigations including firmware updates from Ricoh to address the access control flaw, network segmentation to isolate affected devices, and enhanced monitoring of printer network traffic for suspicious activities. The vulnerability aligns with CWE-285, which addresses improper authorization in software systems, and maps to ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting. Organizations should also review their printer security policies and ensure proper network access controls are in place to prevent unauthorized access to device management interfaces.
The affected Ricoh SP C250DN devices represent a significant risk to enterprise security environments due to the broad range of administrative functions that can be accessed through this vulnerability. The issue demonstrates the critical importance of proper access control implementation in networked devices and highlights the need for comprehensive security testing of embedded systems. Organizations should conduct thorough security assessments of their printer fleets to identify similar vulnerabilities and implement layered security controls including network access control lists, device authentication mechanisms, and regular security audits to prevent exploitation of such weaknesses.