CVE-2022-29747 in Simple Client Management System
Summary
by MITRE • 05/12/2022
Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=invoice/manage_invoice&id= // Leak place ---> id.
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Analysis
by VulDB Data Team • 05/15/2022
The Simple Client Management System version 1.0 contains a critical sql injection vulnerability that stems from improper input validation within the administrative invoice management component. This flaw exists in the parameter handling mechanism where the id parameter from the url path /cms/admin/?page=invoice/manage_invoice&id= is directly incorporated into sql query construction without adequate sanitization or parameterization. The vulnerability manifests when an attacker manipulates the id parameter to inject malicious sql code that can be executed within the database context. The specific injection point occurs in the backend sql query processing where user-supplied input flows directly into the database command execution, creating a direct pathway for unauthorized data access and manipulation.
This sql injection vulnerability operates under the common weakness enumeration CWE-89 which classifies it as a direct sql injection attack vector. The attack surface is particularly concerning as it targets the administrative interface of the system, providing potential attackers with elevated privileges and access to sensitive client data. The vulnerability allows for read operations that can extract confidential information including but not limited to client details, financial records, and administrative credentials. Additionally, the flaw enables write operations that could result in data modification, deletion, or even complete database compromise. The injection occurs at the application layer where the web application fails to properly escape or parameterize user input before incorporating it into database queries.
The operational impact of this vulnerability extends beyond simple data leakage to encompass full database compromise and potential system takeover. An attacker could exploit this flaw to extract all client records, modify existing entries, or insert malicious data into the system. The administrative nature of the targeted component means that successful exploitation could provide unauthorized access to the entire client management system, potentially enabling further lateral movement within the network infrastructure. The vulnerability is particularly dangerous because it affects the core administrative functionality of the system, making it a prime target for attackers seeking persistent access to sensitive business data. This weakness creates a significant risk for organizations relying on the system for client management and financial record keeping.
Mitigation strategies for this vulnerability should implement multiple defensive layers including input validation, parameterized queries, and proper access controls. The most effective immediate fix involves implementing proper parameterized sql queries that separate user input from sql command structure, preventing the injection of malicious code through the id parameter. Additionally, implementing input sanitization measures such as whitelist validation for numeric identifiers and implementing proper error handling that does not expose database structure information to users. The system should also enforce proper authentication and authorization checks to limit access to administrative functions. Organizations should consider implementing web application firewalls to detect and block sql injection attempts, along with regular security assessments to identify similar vulnerabilities in other components of the system. This vulnerability aligns with attack techniques documented in the attack pattern taxonomy under the category of sql injection attacks and represents a critical risk requiring immediate remediation to prevent unauthorized access to sensitive client data and potential system compromise.