CVE-2024-40443 in Simple Laboratory Management System
Summary
by MITRE • 11/13/2024
SQL Injection vulnerability in Simple Laboratory Management System using PHP and MySQL v.1.0 allows a remote attacker to cause a denial of service via the delete_users function in the Useres.php
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Analysis
by VulDB Data Team • 06/15/2025
The SQL injection vulnerability identified in the Simple Laboratory Management System version 1.0 represents a critical security flaw that exposes the application to remote exploitation. This vulnerability specifically resides within the delete_users function of the Useres.php file, where user input is improperly sanitized before being incorporated into database queries. The flaw enables attackers to manipulate the underlying MySQL database through crafted SQL commands, potentially leading to unauthorized data access, modification, or destruction. The system's failure to implement proper input validation and parameterized queries creates an avenue for malicious actors to exploit this weakness.
The technical implementation of this vulnerability stems from the application's reliance on direct string concatenation when building SQL statements. When the delete_users function processes user-supplied parameters, it fails to employ prepared statements or proper input sanitization mechanisms. This design flaw aligns with CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is incorporated into SQL queries without adequate protection. The attack vector is particularly dangerous as it allows remote execution of arbitrary SQL commands, potentially enabling attackers to extract sensitive information from the database or disrupt service availability through destructive operations.
The operational impact of this vulnerability extends beyond simple data compromise, as it can result in complete system disruption through denial of service conditions. An attacker exploiting this vulnerability can manipulate the database to cause the application to crash or become unresponsive, effectively rendering the laboratory management system unavailable to legitimate users. The consequences include potential data loss, unauthorized access to confidential laboratory information, and disruption of critical operational processes that depend on the system's availability. Organizations relying on this system face significant risk to their data integrity and operational continuity.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The primary solution involves implementing parameterized queries or prepared statements throughout the application to ensure that user input cannot be interpreted as SQL commands. Additionally, comprehensive input validation should be enforced at multiple layers including application-level filtering and database-level restrictions. Security patches should be deployed immediately to update the system to a version that addresses this vulnerability. Organizations should also implement proper access controls, monitor database activities for suspicious patterns, and establish regular security assessments to identify similar weaknesses. The remediation process should align with ATT&CK framework techniques related to command and control, credential access, and defense evasion, ensuring comprehensive protection against exploitation attempts.