CVE-2006-4599 in Autentificator
Summary
by MITRE
SQL injection vulnerability in aut_verifica.inc.php in Autentificator 2.01 allows remote attackers to execute arbitrary SQL commands via the user parameter.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/10/2025
The vulnerability described in CVE-2006-4599 represents a critical SQL injection flaw within the Autentificator 2.01 authentication system, specifically in the aut_verifica.inc.php component. This vulnerability exposes the application to remote code execution risks through improper input validation mechanisms. The flaw occurs when the application fails to adequately sanitize or escape user-supplied data before incorporating it into SQL query constructions, creating an avenue for malicious actors to manipulate database operations through crafted input parameters.
The technical exploitation of this vulnerability hinges on the improper handling of the user parameter within the aut_verifica.inc.php file, which serves as a critical authentication verification script. When an attacker submits malicious input through the user parameter, the application directly incorporates this unvalidated data into database queries without appropriate sanitization measures. This design flaw falls under the well-documented CWE-89 category of SQL injection vulnerabilities, where insufficient input validation allows attackers to inject malicious SQL code. The vulnerability's impact is amplified by its remote execution capability, meaning attackers do not require local system access to exploit the flaw, making it particularly dangerous for web applications.
From an operational standpoint, this vulnerability presents significant risks to system integrity and data confidentiality. Successful exploitation could enable attackers to extract sensitive information from the database, modify or delete critical records, and potentially escalate privileges within the affected system. The authentication system's compromised state could lead to unauthorized access to protected resources, making it a prime target for attackers seeking to establish persistent access or conduct further reconnaissance activities. The vulnerability's presence in an authentication module particularly amplifies its impact, as it directly undermines the system's ability to verify user identities and maintain secure access controls.
Security professionals should implement immediate mitigations including input validation and parameterized query implementations to address this vulnerability. The recommended approach involves adopting prepared statements or parameterized queries to ensure that user input is properly escaped and treated as data rather than executable code. Additionally, implementing proper input sanitization routines and restricting database user privileges can significantly reduce the potential impact of such vulnerabilities. Organizations should also consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts. This vulnerability aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications, emphasizing the need for comprehensive application security measures including regular security assessments and vulnerability scanning to identify similar weaknesses in the application's codebase.