CVE-2022-29587 in bizhub MFP
Summary
by MITRE • 05/16/2022
Konica Minolta bizhub MFP devices before 2022-04-14 have an internal Chromium browser that executes with root (aka superuser) access privileges.
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Analysis
by VulDB Data Team • 06/22/2024
The vulnerability identified as CVE-2022-29587 affects Konica Minolta bizhub multifunction printer devices prior to the 2022-04-14 firmware update, presenting a critical security risk through the execution of an internal chromium browser with elevated root privileges. This flaw represents a significant compromise in the device's security architecture, as the embedded browser component operates with superuser access levels rather than restricted user permissions. The exploitation of this vulnerability allows attackers to execute arbitrary code with the highest possible system privileges, effectively bypassing traditional security controls and access restrictions that normally protect system integrity.
The technical implementation of this vulnerability stems from improper privilege separation within the device's embedded web browser component. The internal chromium browser is designed to run with root access privileges, which creates an attack surface where malicious code can be executed with system-level permissions. This design flaw directly violates the principle of least privilege, a fundamental security concept that requires processes to operate with the minimum necessary access rights. The vulnerability manifests when the browser component processes web content or executes scripts, providing an execution environment where attacker-controlled code can leverage root privileges to manipulate system resources, modify firmware, or establish persistent access.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally undermines the security posture of enterprise environments that rely on these devices for document management and printing services. Organizations using affected Konica Minolta devices face potential compromise of their entire network infrastructure, as the root-level access enables attackers to manipulate device configurations, access stored documents, intercept print jobs, and potentially use the compromised device as a pivot point for lateral movement within the network. This vulnerability particularly affects environments where these devices are connected to sensitive internal networks, as they can serve as entry points for attackers seeking to establish persistent presence within the organization's infrastructure.
The risk associated with CVE-2022-29587 aligns with CWE-276, which addresses improper privileges, and represents a clear violation of the principle that processes should not operate with unnecessary privileges. From an attack perspective, this vulnerability maps to multiple ATT&CK techniques including privilege escalation and persistence mechanisms, as attackers can leverage the root access to establish backdoors, modify system files, or create unauthorized access points. The exploitation of this vulnerability typically requires minimal technical expertise, making it particularly dangerous as it can be targeted by both sophisticated and less skilled attackers. Organizations should immediately implement firmware updates to address this vulnerability, as the risk of exploitation increases with the prevalence of such devices in enterprise environments. Additionally, network segmentation and monitoring of device communications can help detect potential exploitation attempts, while regular security assessments should verify that all embedded systems maintain appropriate privilege levels and security configurations.