CVE-2005-3978 in NetClassifieds
Summary
by MITRE
Multiple SQL injection vulnerabilities in NetClassifieds Premium Edition 1.0.1, Professional Edition 1.5.1, Standard Edition 1.9.6.3, and Free Edition 1.0.1 allow remote attackers to execute arbitrary SQL commands via the (1) CatID parameter in (a) ViewCat.php and (b) gallery.php, and the (2) ItemNum parameter in (c) ViewItem.php.
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Analysis
by VulDB Data Team • 08/26/2025
The vulnerability described in CVE-2005-3978 represents a critical security flaw affecting multiple editions of the NetClassifieds web application suite. This SQL injection vulnerability exists in versions including Premium Edition 1.0.1, Professional Edition 1.5.1, Standard Edition 1.9.6.3, and Free Edition 1.0.1, making it a widespread issue across the product line. The flaw allows remote attackers to manipulate database queries through specifically crafted input parameters, potentially leading to complete database compromise and unauthorized access to sensitive information. The vulnerability specifically targets three distinct parameter inputs across different PHP scripts within the application, creating multiple attack vectors for malicious actors.
The technical implementation of this vulnerability stems from improper input validation and sanitization within the web application's database interaction code. Attackers can exploit the CatID parameter in ViewCat.php and gallery.php, as well as the ItemNum parameter in ViewItem.php, by injecting malicious SQL code through these input fields. When these parameters are processed without adequate sanitization, the application's SQL queries become vulnerable to manipulation, allowing attackers to execute arbitrary SQL commands on the underlying database server. This type of vulnerability directly maps to CWE-89, which specifically addresses SQL injection flaws in software applications. The vulnerability's classification aligns with the Common Weakness Enumeration's definition of improper neutralization of special elements used in SQL commands, where user-supplied input is directly incorporated into database queries without proper escaping or parameterization.
The operational impact of this vulnerability extends far beyond simple data theft, as it provides attackers with complete control over the affected database system. Successful exploitation could enable attackers to read, modify, or delete sensitive data including user credentials, personal information, classified advertisements, and potentially system configuration details. The remote nature of the attack means that adversaries do not require physical access to the system or local network privileges to exploit the vulnerability. This weakness creates a significant risk for organizations using NetClassifieds, as it could lead to data breaches, service disruption, and potential regulatory compliance violations. The attack surface is particularly concerning given that the vulnerability affects multiple editions of the same application, suggesting a fundamental flaw in the codebase that was not properly addressed during development or security testing phases.
Security mitigations for this vulnerability should focus on implementing proper input validation and parameterized queries throughout the application code. The most effective immediate solution involves sanitizing all user inputs before they are incorporated into database queries, utilizing prepared statements or parameterized queries to prevent SQL injection attacks. Organizations should also implement proper access controls and database permissions to limit the damage that could result from successful exploitation. Additionally, the application should be updated to a patched version that addresses the specific input validation issues in ViewCat.php, gallery.php, and ViewItem.php scripts. This vulnerability demonstrates the importance of following secure coding practices and adhering to the principles outlined in the OWASP Top Ten, particularly the SQL injection category. The ATT&CK framework would categorize this vulnerability under T1190 - Exploit Public-Facing Application, highlighting how attackers can leverage web application weaknesses to gain unauthorized access to backend systems and databases.