CVE-2020-22166 in Hospital Management System in PHP
Summary
by MITRE • 06/22/2021
PHPGurukul Hospital Management System in PHP v4.0 has a SQL injection vulnerability in \hms\forgot-password.php. Remote unauthenticated users can exploit the vulnerability to obtain database sensitive information.
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Analysis
by VulDB Data Team • 06/24/2021
The vulnerability identified as CVE-2020-22166 affects the PHPGurukul Hospital Management System version 4.0, specifically within the \hms\forgot-password.php component. This represents a critical security flaw that exposes the system to unauthorized data access through SQL injection techniques. The vulnerability occurs when the application fails to properly sanitize user input provided during the password recovery process, creating an entry point for malicious actors to manipulate database queries. The flaw is particularly concerning because it allows remote unauthenticated users to exploit the system without requiring prior login credentials or administrative privileges, making it accessible to any internet-connected attacker. This type of vulnerability falls under the CWE-89 category of SQL Injection, which is classified as a high-risk security weakness that can lead to complete database compromise.
The technical exploitation of this vulnerability occurs when the forgot-password.php script processes user input without adequate validation or parameterization. Attackers can inject malicious SQL payloads through input fields typically used for email addresses or patient identification numbers, allowing them to manipulate the underlying database queries. The unauthenticated nature of the attack means that threat actors do not need to establish a valid session or possess legitimate credentials to attempt exploitation. This weakness enables attackers to extract sensitive information including patient records, administrative credentials, and other confidential data stored within the database. The vulnerability demonstrates poor input validation practices and inadequate query sanitization mechanisms that are fundamental requirements for preventing SQL injection attacks.
The operational impact of CVE-2020-22166 extends beyond simple data theft, as it can lead to complete system compromise and unauthorized access to protected health information. Healthcare systems are particularly vulnerable to such attacks due to the sensitive nature of medical data and the regulatory requirements surrounding data protection. The exploitation of this vulnerability can result in patient privacy breaches, compliance violations under HIPAA regulations, and potential financial penalties for organizations. Additionally, attackers may use the extracted data to conduct further attacks including identity theft, ransomware deployment, or credential stuffing attacks against other systems. The remote exploitation capability means that attackers can target the system from anywhere in the world, making it extremely difficult to trace and prevent such attacks. This vulnerability also increases the risk of business disruption and reputational damage for healthcare organizations that rely on the affected system.
Mitigation strategies for CVE-2020-22166 should focus on implementing proper input validation and parameterized queries to prevent SQL injection attacks. Organizations should immediately apply patches or updates provided by PHPGurukul to address this vulnerability, as the vendor has likely released a fix for the vulnerable code. The implementation of prepared statements or parameterized queries in the forgot-password.php script would effectively prevent malicious SQL payloads from being executed. Additionally, network-level protections such as web application firewalls and intrusion detection systems can help monitor and block suspicious database access patterns. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the system. Organizations should also implement proper access controls and monitoring mechanisms to detect unauthorized database access attempts, ensuring that any exploitation attempts are quickly identified and responded to. The remediation process should include comprehensive testing to verify that the vulnerability has been properly addressed without introducing new issues that could affect system functionality.