CVE-2022-36733 in Library Management System
Summary
by MITRE • 08/31/2022
Library Management System v1.0 was discovered to contain a SQL injection vulnerability via the M_Id parameter at /admin/del.php.
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Analysis
by VulDB Data Team • 10/10/2022
The vulnerability identified as CVE-2022-36733 represents a critical SQL injection flaw within the Library Management System version 1.0, specifically targeting the administrative interface. This vulnerability exists in the del.php file where the M_Id parameter is processed without adequate input validation or sanitization. The affected system operates under the assumption that all user-supplied data is trustworthy, creating an exploitable entry point for malicious actors seeking to manipulate the underlying database infrastructure. The vulnerability is particularly concerning as it resides within the administrative section of the application, which typically contains sensitive data and privileged operations that could be leveraged for unauthorized access or data compromise.
The technical exploitation of this SQL injection vulnerability occurs when an attacker submits malicious input through the M_Id parameter, allowing them to inject arbitrary SQL commands into the database query execution flow. This flaw directly maps to CWE-89, which categorizes SQL injection as a fundamental weakness in application security where untrusted data is incorporated into SQL queries without proper sanitization. The vulnerability enables attackers to perform unauthorized database operations including data retrieval, modification, deletion, or even privilege escalation depending on the database configuration and the application's permissions structure. The injection point at /admin/del.php suggests that the application's administrative deletion functionality is particularly vulnerable, as this endpoint likely handles user management or library item removal operations.
The operational impact of this vulnerability extends beyond simple data theft, potentially allowing attackers to gain complete control over the library management database. Successful exploitation could result in unauthorized access to patron records, book inventory data, administrative credentials, and potentially sensitive operational information. The vulnerability's presence in an administrative endpoint amplifies the risk as attackers could manipulate user permissions, delete critical records, or inject malicious content that could affect the entire system. This type of vulnerability aligns with ATT&CK technique T1190, which describes exploitation of remote services through injection attacks, and T1071.004, which covers application layer protocol manipulation. The attack surface is particularly dangerous because it allows for both passive data exfiltration and active system manipulation.
Mitigation strategies for CVE-2022-36733 should prioritize immediate implementation of parameterized queries or prepared statements to prevent SQL injection attacks from succeeding. The system should enforce strict input validation on all parameters, particularly those used in database operations, and implement proper sanitization techniques to eliminate malicious payloads before database processing. Organizations should also implement proper access controls and least privilege principles for administrative functions, ensuring that only authorized personnel can access sensitive endpoints. Additionally, regular security testing including automated vulnerability scanning and manual penetration testing should be conducted to identify similar weaknesses throughout the application. The remediation process should include comprehensive code review to address similar patterns across the application, as SQL injection vulnerabilities often occur in multiple locations within poorly secured applications. Security monitoring should also be enhanced to detect unusual database query patterns that may indicate exploitation attempts.