CVE-2017-9834 in WatuPRO Plugin
Summary
by MITRE
SQL injection vulnerability in the WatuPRO plugin before 5.5.3.7 for WordPress allows remote attackers to execute arbitrary SQL commands via the watupro_questions parameter in a watupro_submit action to wp-admin/admin-ajax.php.
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Analysis
by VulDB Data Team • 11/24/2025
The CVE-2017-9834 vulnerability represents a critical sql injection flaw within the WatuPRO plugin for WordPress systems. This vulnerability specifically affects versions prior to 5.5.3.7 and exposes the plugin to remote code execution through improper input validation. The attack vector occurs when malicious actors exploit the watupro_questions parameter within the watupro_submit action that is processed through the wp-admin/admin-ajax.php endpoint. This endpoint serves as a central hub for handling asynchronous requests in WordPress, making it a prime target for exploitation. The vulnerability allows remote attackers to inject malicious sql commands directly into the database layer, potentially enabling complete system compromise.
The technical implementation of this vulnerability stems from inadequate sanitization of user input within the plugin's handling of the watupro_questions parameter. When the plugin processes the watupro_submit action, it fails to properly validate or escape the input data before incorporating it into sql queries. This failure directly maps to CWE-89 which categorizes sql injection as a weakness where untrusted data is incorporated into sql commands without proper validation or escaping mechanisms. The flaw operates at the application layer where user-supplied data flows directly into database operations without sufficient security controls. Attackers can craft malicious payloads that manipulate the sql query structure to extract sensitive information, modify database contents, or even execute system commands through database-specific features.
The operational impact of this vulnerability extends beyond simple data theft to encompass full system compromise and potential data destruction. Remote attackers can leverage this vulnerability to access confidential user information, including credentials, personal details, and other sensitive data stored within the wordpress database. The exploitation process allows for privilege escalation within the database context, potentially enabling attackers to gain administrative access to the entire wordpress installation. This vulnerability can lead to persistent backdoors, data exfiltration, and complete takeover of the affected website. Organizations running vulnerable versions of WatuPRO face significant risk of reputational damage, regulatory compliance violations, and potential financial losses due to data breaches and service disruption. The attack can be executed without authentication, making it particularly dangerous as it requires no prior access to the system.
Mitigation strategies for CVE-2017-9834 focus primarily on immediate plugin updates to version 5.5.3.7 or later, which contain the necessary security patches. System administrators should implement comprehensive input validation and output encoding practices to prevent similar vulnerabilities in custom applications. The use of web application firewalls can provide additional protection layers by monitoring and filtering suspicious sql injection attempts. Regular security audits and vulnerability assessments should be conducted to identify and remediate similar issues within the wordpress ecosystem. Organizations should also implement principle of least privilege for database connections and employ proper parameterized queries to prevent sql injection attacks. The vulnerability highlights the importance of maintaining updated wordpress plugins and following secure coding practices. According to ATT&CK framework, this vulnerability maps to T1071.004 for application layer protocol usage and T1190 for exploit public-facing application, emphasizing the need for proper network segmentation and application security controls. Additionally, implementing database activity monitoring and intrusion detection systems can help identify exploitation attempts and provide early warning of potential breaches.