CVE-2025-9705 in Water Billing System
Summary
by MITRE • 08/30/2025
A weakness has been identified in SourceCodester Water Billing System 1.0. Affected is an unknown function of the file /paybill.php. This manipulation of the argument ID causes sql injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.
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Analysis
by VulDB Data Team • 09/09/2025
The vulnerability CVE-2025-9705 represents a critical sql injection flaw within the SourceCodester Water Billing System version 1.0, specifically affecting the /paybill.php file. This weakness stems from inadequate input validation and sanitization practices within the application's data processing pipeline, creating a direct pathway for malicious actors to manipulate database operations through crafted input parameters.
The technical flaw manifests when an attacker supplies a maliciously constructed ID argument to the paybill.php endpoint, allowing arbitrary sql commands to be executed within the context of the database user account. This vulnerability directly maps to CWE-89 sql injection, a well-documented weakness category that enables attackers to bypass authentication, extract sensitive data, modify database contents, or even execute operating system commands depending on the database system and privileges available. The attack vector is particularly concerning as it enables remote exploitation without requiring authentication, making it accessible to any internet-facing system.
The operational impact of this vulnerability extends beyond simple data theft, potentially allowing attackers to compromise the entire billing system infrastructure. An attacker could extract customer billing information, manipulate payment records, or gain unauthorized access to administrative functions through the compromised database. The public availability of exploitation tools further amplifies the risk, as it eliminates the need for sophisticated attack development and enables automated exploitation across multiple vulnerable instances. This vulnerability directly aligns with ATT&CK technique T1190 for exploitation of remote services and T1071.004 for application layer protocol usage, demonstrating how attackers can leverage web application flaws to establish persistent access to critical infrastructure.
Mitigation strategies should include immediate input validation and parameterized queries implementation to prevent sql injection attacks. The system should employ prepared statements with proper parameter binding to ensure user input cannot alter the intended sql command structure. Additionally, implementing web application firewalls, input sanitization, and regular security audits would significantly reduce the attack surface. Network segmentation and access controls should be enforced to limit potential damage even if exploitation occurs. The vulnerability highlights the importance of secure coding practices and proper input validation as fundamental defensive measures against sql injection attacks. Organizations should conduct comprehensive vulnerability assessments to identify similar flaws in related systems and establish robust patch management processes to address such security weaknesses promptly.