CVE-2017-15986 in Lead Reward Script
Summary
by MITRE
CPA Lead Reward Script allows SQL Injection via the username parameter.
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Analysis
by VulDB Data Team • 08/24/2025
The vulnerability identified as CVE-2017-15986 affects the CPA Lead Reward Script, a web application designed for affiliate marketing and lead generation services. This particular flaw represents a classic SQL injection vulnerability that exploits improper input validation within the application's authentication mechanism. The vulnerability specifically targets the username parameter, which is processed without adequate sanitization or parameterization, creating an exploitable entry point for malicious actors to manipulate the underlying database queries.
The technical implementation of this vulnerability stems from the application's failure to properly escape or parameterize user input when constructing SQL queries for user authentication. When an attacker submits a specially crafted username parameter containing malicious SQL code, the application processes this input directly within the database query without proper validation or sanitization. This allows the attacker to inject arbitrary SQL commands that execute with the privileges of the database user associated with the web application. The vulnerability aligns with CWE-89, which specifically addresses SQL injection flaws where untrusted data is incorporated into SQL commands without proper escaping or parameterization.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with extensive access to the application's backend database. Successful exploitation could enable attackers to extract sensitive user information including usernames, passwords, and personal data stored within the database. Additionally, attackers could modify or delete database records, potentially disrupting the application's functionality and compromising the integrity of lead tracking data. The vulnerability also creates opportunities for privilege escalation attacks, where attackers might gain administrative access to the application and its underlying systems, as noted in the ATT&CK framework under T1078 for valid accounts and T1046 for network service scanning.
Mitigation strategies for this vulnerability should prioritize immediate implementation of parameterized queries or prepared statements to ensure that user input is properly separated from the SQL command structure. The application should implement comprehensive input validation and sanitization measures, rejecting or escaping special characters that could be used in SQL injection attacks. Additionally, the principle of least privilege should be enforced by ensuring that the database user account used by the web application has minimal necessary permissions, preventing attackers from executing destructive operations even if they successfully exploit the vulnerability. Regular security auditing and penetration testing should be conducted to identify similar vulnerabilities in other application components, while proper error handling should be implemented to prevent information leakage that could aid attackers in crafting more sophisticated attacks.