CVE-2009-1812 in myGesuad
Summary
by MITRE
Multiple SQL injection vulnerabilities in myGesuad 0.9.14 (aka 0.9) allow remote attackers to execute arbitrary SQL commands via (1) the formUser parameter (aka the Name field) to common/login.php, and allow remote authenticated users to execute arbitrary SQL commands via the ID parameter in a Detail action to (2) kategorie.php, (3) budget.php, (4) zahlung.php, or (5) adresse.php in modules/, related to classes/class.perform.php.
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Analysis
by VulDB Data Team • 11/29/2024
The vulnerability identified as CVE-2009-1812 represents a critical SQL injection flaw in myGesuad version 0.9.14, a web-based financial management system. This vulnerability manifests through multiple attack vectors that collectively expose the application to remote code execution through maliciously crafted SQL commands. The primary attack surface includes the login authentication mechanism and various administrative functions within the system's modules. The vulnerability stems from inadequate input validation and sanitization practices within the application's database interaction layers, allowing attackers to manipulate SQL query structures through user-supplied parameters.
The technical exploitation occurs through two distinct pathways that demonstrate poor security design principles and inadequate parameter handling. The first vulnerability exists in the common/login.php script where the formUser parameter, which corresponds to the Name field, is directly incorporated into SQL queries without proper sanitization. This allows remote attackers to inject malicious SQL code that can bypass authentication mechanisms or extract sensitive database information. The second set of vulnerabilities affects the modules directory and specifically targets four different PHP files: kategorie.php, budget.php, zahlung.php, and adresse.php. These vulnerabilities are triggered through the ID parameter during Detail actions and are rooted in the classes/class.perform.php file, which handles database operations for these modules.
The operational impact of this vulnerability extends far beyond simple data theft, as it provides attackers with the capability to execute arbitrary SQL commands on the underlying database server. This level of access enables attackers to manipulate financial records, modify user credentials, extract confidential information, and potentially establish persistent backdoors within the system. The remote nature of the attack means that adversaries do not require physical access to the system or local network presence, making this vulnerability particularly dangerous for web-based applications. The authenticated user path presents an additional risk as it allows users who have legitimate access to escalate their privileges and execute malicious commands within the application's administrative functions.
Security professionals should recognize this vulnerability as a classic example of CWE-89 SQL Injection, which is categorized under the Common Weakness Enumeration framework as a fundamental flaw in data validation and input sanitization. The attack patterns align with MITRE ATT&CK techniques for SQL injection, specifically targeting the execution of malicious code through database interfaces. Organizations running this version of myGesuad should implement immediate mitigations including input validation, parameterized queries, and proper database access controls. The recommended remediation involves updating to a patched version of the application, implementing web application firewalls, and conducting comprehensive security assessments of all database interactions. Additionally, regular security audits and code reviews should be performed to identify similar vulnerabilities in other application components, as the presence of one SQL injection vulnerability often indicates broader security design issues that may affect other parts of the system.