CVE-2006-5316 in registroTL
Summary
by MITRE
registroTL stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a database via a direct request for /usuarios.dat.
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Analysis
by VulDB Data Team • 04/24/2026
The vulnerability described in CVE-2006-5316 represents a critical security flaw in the registroTL application that exposes sensitive data through improper access control mechanisms. This issue stems from the application's failure to implement adequate security measures when storing confidential information within the web server's document root directory. The specific flaw allows remote attackers to directly access and download a database file named usuarios.dat through a simple HTTP request, bypassing any authentication or authorization checks that should normally protect such sensitive data.
The technical implementation of this vulnerability demonstrates a fundamental misunderstanding of secure coding practices and web application security principles. When applications store sensitive information in directories that are publicly accessible through the web root, they create an attack surface that directly violates the principle of least privilege and proper access control enforcement. The usuarios.dat file contains user information that should be protected through appropriate authentication mechanisms, database access controls, and proper file system permissions. This flaw falls under the category of insecure direct object references as defined by CWE-22, where attackers can directly access resources by manipulating object references in the application.
The operational impact of this vulnerability extends beyond simple data exposure, as it provides attackers with access to potentially sensitive user information including personal details, credentials, or other confidential data stored within the usuarios.dat database file. This exposure creates significant risk for organizations relying on registroTL, as the stolen data could be used for identity theft, account takeover attempts, or further targeted attacks against individuals whose information has been compromised. The remote nature of the attack means that no local system compromise or privileged access is required, making this vulnerability particularly dangerous and easy to exploit.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and credential access, as attackers can directly access stored credentials or user information without needing to bypass authentication mechanisms. The vulnerability also demonstrates poor defense-in-depth practices, as multiple security controls should have been in place to prevent unauthorized access to sensitive data files. Organizations should implement proper file system permissions, web server configuration controls, and application-level access controls to prevent such exposure. The fix involves ensuring that sensitive data files are stored outside of the web root directory and that proper authentication and authorization mechanisms are enforced before any data access is granted, addressing the core issue of insufficient access control that enables this direct database download attack.