CVE-2022-25342 in d-COLOR MF3555
Summary
by MITRE • 04/20/2022
An issue was discovered on Kyocera d-COLOR MF3555 2XD_S000.002.271 devices. The Web Application is affected by Broken Access Control. It does not properly validate requests for access to data and functionality under the /mngset/authset path. By not verifying permissions for access to resources, it allows a potential attacker to view pages that are not allowed.
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Analysis
by VulDB Data Team • 04/27/2022
The vulnerability identified as CVE-2022-25342 affects Kyocera d-COLOR MF3555 2XD_S000.002.271 multifunction devices, representing a critical broken access control flaw within the device's web application interface. This issue resides in the /mngset/authset path where the system fails to properly validate user requests for accessing sensitive data and administrative functions. The vulnerability stems from inadequate authorization checks that should normally verify user permissions before granting access to restricted resources. According to CWE-284, this represents a direct violation of proper access control mechanisms where the application does not adequately enforce authorization policies. The affected device operates with a web-based management interface that allows administrators and users to configure various device settings through HTTP requests.
The technical implementation of this vulnerability allows an attacker to exploit the missing authorization validation by directly accessing the /mngset/authset endpoint without proper authentication or permission verification. This flaw enables unauthorized access to administrative functions and sensitive configuration data that should only be available to authenticated administrators. The device's web application fails to implement proper session management and access control validation, creating a pathway for privilege escalation attacks. Attackers can potentially discover and access pages containing administrative settings, user configurations, network parameters, and other sensitive information that should remain protected. This issue aligns with ATT&CK technique T1078 which describes valid accounts usage for persistence and privilege escalation within network environments.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to manipulate device configurations and potentially gain unauthorized control over the multifunction device. An attacker could modify network settings, change user permissions, access print job logs, and potentially disrupt document management processes. The vulnerability affects the device's ability to maintain secure access controls and could lead to unauthorized access to sensitive corporate documents or network resources. Organizations relying on these devices for document management and printing services face significant risks, particularly in environments where the devices are connected to internal networks. The vulnerability is particularly concerning because it affects the device's management interface, which typically requires elevated privileges to access. According to industry best practices outlined in NIST SP 800-53, proper access control mechanisms must be implemented to prevent unauthorized access to system resources, which this vulnerability clearly fails to provide.
Mitigation strategies for this vulnerability should include immediate firmware updates from Kyocera to address the access control flaw, along with network segmentation to limit access to the device's management interface. Organizations should implement strict firewall rules that restrict access to the device's web management interface to authorized administrative networks only. Additionally, network monitoring should be enhanced to detect unauthorized access attempts to the affected paths. The device should be configured with strong authentication mechanisms, and unnecessary administrative access should be disabled. Regular security assessments should verify that access controls are properly enforced, and continuous monitoring should be implemented to detect potential exploitation attempts. Organizations should also consider implementing network access control solutions to further restrict access to critical device management interfaces. This vulnerability demonstrates the importance of proper access control implementation and highlights the need for regular security testing of networked devices to prevent unauthorized access to administrative functions.