CVE-2006-6441 in WorkCentre
Summary
by MITRE
Xerox WorkCentre and WorkCentre Pro before 12.050.03.000, 13.x before 13.050.03.000, and 14.x before 14.050.03.000 allows local users to bypass security controls and boot Alchemy via certain alternate boot media, as demonstrated by a USB thumb drive.
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Analysis
by VulDB Data Team • 09/30/2017
This vulnerability affects Xerox WorkCentre and WorkCentre Pro multifunction devices running specific firmware versions, creating a critical security weakness in the device's boot process. The flaw resides in the device's inability to properly validate boot media, allowing local attackers with physical access to bypass established security controls and execute unauthorized boot sequences. The vulnerability specifically enables attackers to boot the device using alternate media such as USB thumb drives, which represents a significant compromise of the device's integrity and security posture. This issue impacts multiple product lines including versions 12.x, 13.x, and 14.x of the Xerox WorkCentre family, with affected versions prior to 12.050.03.000, 13.050.03.000, and 14.050.03.000 respectively, indicating a widespread concern across the product lineage.
The technical implementation of this vulnerability stems from insufficient validation of boot media during the device initialization process. When a device boots from alternate media, proper authentication and verification mechanisms fail to prevent unauthorized execution paths. This weakness allows an attacker to insert malicious boot media, typically USB drives containing the Alchemy operating system or custom boot loaders, and execute code that bypasses the device's normal security controls. The vulnerability is classified as a boot integrity issue that undermines the device's firmware security model, potentially allowing attackers to gain unauthorized access to the device's underlying system and execute arbitrary code with elevated privileges. The flaw represents a direct violation of the principle of least privilege and proper access control enforcement during system initialization.
The operational impact of this vulnerability is severe for organizations relying on Xerox WorkCentre devices, as it provides a clear attack vector for local adversaries with physical access to the devices. An attacker could potentially install backdoors, modify system configurations, or extract sensitive data from the device's storage. The ability to boot from unauthorized media also enables persistent threat actors to maintain access to the device even after routine maintenance or security updates. This vulnerability particularly affects enterprise environments where multifunction devices are deployed in high-security areas, as it undermines the physical security controls that should prevent unauthorized modifications to critical business infrastructure. The risk is compounded by the fact that such devices often contain sensitive corporate data and may be located in areas with limited physical security monitoring.
Organizations should implement immediate mitigations including updating to the patched firmware versions 12.050.03.000, 13.050.03.000, and 14.050.03.000 as provided by Xerox. Physical security measures should be enhanced to prevent unauthorized access to device boot media ports and USB connections. Network segmentation and monitoring should be implemented to detect unauthorized device modifications. The vulnerability aligns with CWE-284, which addresses improper access control during boot processes, and represents a significant concern under the ATT&CK framework's boot integrity tactics. Additionally, organizations should consider implementing device lockdown procedures that disable unnecessary boot media options and enforce secure boot policies to prevent unauthorized system modifications. Regular security assessments should be conducted to verify that device firmware remains up to date and that physical security controls are properly enforced across all multifunction device deployments.