CVE-2022-43969 in mp_c4504ex
Summary
by MITRE • 02/16/2023
Ricoh mp_c4504ex devices with firmware 1.06 mishandle credentials.
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Analysis
by VulDB Data Team • 03/16/2023
The vulnerability identified as CVE-2022-43969 affects Ricoh mp_c4504ex multifunction devices running firmware version 1.06, representing a critical security flaw in enterprise printing infrastructure. This issue stems from improper credential handling mechanisms within the device's authentication and authorization framework, creating potential entry points for unauthorized access to sensitive network resources and printing services. The vulnerability resides in the device's firmware implementation where authentication credentials are not properly validated or sanitized during processing, allowing malicious actors to exploit weak credential management practices.
The technical flaw manifests through inadequate input validation and credential processing within the Ricoh device's authentication subsystem. When users or systems attempt to authenticate with the device, the firmware fails to properly verify credential integrity, potentially accepting malformed or improperly formatted authentication tokens. This weakness creates opportunities for credential replay attacks, brute force attempts, or privilege escalation scenarios where attackers can bypass normal authentication procedures. The vulnerability aligns with CWE-287 which addresses improper authentication issues, specifically focusing on systems that fail to properly validate or handle authentication credentials. The device's firmware implementation likely lacks proper cryptographic handling of credentials, including insufficient hashing algorithms, weak encryption methods, or inadequate session management protocols.
From an operational impact perspective, this vulnerability presents significant risks to enterprise environments where the Ricoh mp_c4504ex devices serve as critical components of document management and printing infrastructure. Attackers exploiting this weakness could gain unauthorized access to print queues, network resources, and potentially sensitive documents processed through these devices. The compromised device may serve as a foothold for lateral movement within the network, allowing attackers to escalate privileges and access additional systems. Organizations relying on these devices for business-critical printing operations face potential data exposure, regulatory compliance violations, and operational disruption. The vulnerability particularly affects environments with strict security requirements such as financial institutions, healthcare organizations, or government agencies where document security and access control are paramount.
Mitigation strategies for CVE-2022-43969 should prioritize immediate firmware updates from Ricoh to address the credential handling flaws. Organizations must implement comprehensive network segmentation to limit access to these devices and establish strict firewall rules restricting communication to authorized networks only. Additional protective measures include enabling strong authentication mechanisms such as multi-factor authentication, implementing robust credential management policies, and conducting regular security assessments of printing infrastructure. Network monitoring should be enhanced to detect unusual authentication patterns or unauthorized access attempts. The vulnerability demonstrates the importance of maintaining up-to-date firmware and implementing security controls aligned with NIST cybersecurity frameworks and ISO 27001 standards. Security teams should also consider implementing device access controls through network access control lists and establishing incident response procedures specifically addressing printer-related security incidents to ensure rapid detection and remediation of similar vulnerabilities.