CVE-2007-0140 in Kolayindir Download
Summary
by MITRE
SQL injection vulnerability in down.asp in Kolayindir Download (Yenionline) allows remote attackers to execute arbitrary SQL commands via the id parameter.
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Analysis
by VulDB Data Team • 09/06/2024
The vulnerability identified as CVE-2007-0140 represents a critical SQL injection flaw within the down.asp component of Kolayindir Download version Yenionline, a web application designed for file downloading services. This vulnerability resides in the handling of user-supplied input through the id parameter, which is processed without adequate sanitization or validation mechanisms. The flaw allows malicious actors to manipulate the database query execution flow by injecting specially crafted SQL commands through the vulnerable parameter.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the id parameter in the down.asp script. The application fails to properly escape or parameterize user input before incorporating it into SQL database queries, creating an environment where attacker-controlled data can directly influence the query structure. This injection allows the execution of arbitrary SQL commands against the underlying database system, potentially enabling unauthorized access to sensitive information, data manipulation, or complete database compromise. The vulnerability falls under the CWE-89 category of SQL Injection, which is classified as a critical weakness in software security design and implementation practices.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with significant control over the affected system's database layer. Successful exploitation could result in unauthorized data access, modification, or deletion of sensitive information stored within the application's database. Attackers might also leverage this vulnerability to escalate privileges, create backdoor accounts, or extract database schema information that could facilitate further attacks. The vulnerability's remote nature means that attackers do not require physical access to the system, making it particularly dangerous for web applications exposed to public networks. According to ATT&CK framework, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1071.004 (Application Layer Protocol: DNS) as attackers may use various protocols to deliver malicious payloads.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and parameterized queries throughout the application codebase. The recommended approach involves replacing direct string concatenation of user input with prepared statements or parameterized queries that separate SQL command structure from data values. Additionally, implementing proper input sanitization, output encoding, and least privilege database access controls can significantly reduce the impact of such vulnerabilities. Regular security code reviews, implementation of web application firewalls, and comprehensive penetration testing should be conducted to identify and remediate similar weaknesses. Organizations should also consider implementing proper error handling that does not expose database structure information to end users, as this information can aid attackers in crafting more sophisticated attacks. The vulnerability demonstrates the critical importance of following secure coding practices and adhering to the principle of least privilege in database access design.