CVE-2007-0629 in WebGUI
Summary
by MITRE
The www_purgeList method in Plain Black WebGUI before 7.3.8 does not properly check user permissions, which allows attackers to delete unauthorized assets. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 08/18/2018
The vulnerability identified as CVE-2007-0629 affects the Plain Black WebGUI software version 7.3.7 and earlier, representing a critical authorization flaw that undermines the system's access control mechanisms. This issue resides within the www_purgeList method, which is responsible for handling asset deletion operations within the web-based graphical user interface. The flaw stems from inadequate validation of user privileges before executing destructive operations, creating a path for unauthorized individuals to manipulate the system's asset management functions. Security researchers have documented that this vulnerability allows attackers to bypass legitimate access controls and perform asset deletion actions that should be restricted to authorized personnel only.
The technical implementation of this vulnerability demonstrates a classic insufficient authorization check pattern that aligns with CWE-285, which categorizes improper authorization within software systems. The www_purgeList method fails to verify whether the authenticated user possesses the necessary administrative privileges required to execute asset deletion operations. This weakness operates at the application layer, specifically targeting the web interface's permission validation logic where user roles and access rights should be rigorously enforced before any destructive operations are permitted. The vulnerability essentially creates a privilege escalation path where low-privileged users can execute high-privileged functions through manipulation of the web interface's parameter handling.
From an operational perspective, this vulnerability presents significant risk to organizations relying on Plain Black WebGUI for content management and asset handling. Attackers exploiting this flaw can potentially delete critical files, documents, or media assets without proper authorization, leading to data loss, service disruption, and potential compliance violations. The impact extends beyond simple data destruction as it undermines the integrity of the entire content management system, potentially allowing attackers to compromise other system components through cascading effects of unauthorized modifications. Organizations using this software may face reputational damage, regulatory penalties, and increased security incident response costs when such unauthorized deletions occur.
The mitigation strategy for CVE-2007-0629 requires immediate implementation of the vendor-provided patch version 7.3.8, which addresses the permission validation flaw in the www_purgeList method. System administrators should conduct comprehensive security assessments to verify that all instances of the affected software have been updated and that proper access controls are restored. Organizations should implement additional monitoring measures to detect unauthorized deletion attempts and establish robust audit trails for asset management operations. The vulnerability's classification under ATT&CK technique T1078.004 highlights the importance of maintaining proper access control mechanisms and implementing least privilege principles. Security teams should also review and strengthen their overall permission management policies, ensuring that all web-based administrative functions properly validate user credentials and authorization levels before executing sensitive operations. Regular security testing and vulnerability assessments should be conducted to identify similar authorization gaps in other system components and prevent similar issues from emerging in the future.