CVE-2022-35156 in Bus Pass Management System
Summary
by MITRE • 09/30/2022
Bus Pass Management System 1.0 was discovered to contain a SQL Injection vulnerability via the searchdata parameter at /buspassms/download-pass.php..
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Analysis
by VulDB Data Team • 05/20/2025
The Bus Pass Management System version 1.0 presents a critical SQL injection vulnerability that fundamentally compromises the integrity and confidentiality of its underlying database infrastructure. This vulnerability specifically manifests through the searchdata parameter within the /buspassms/download-pass.php endpoint, creating an exploitable entry point that allows malicious actors to inject arbitrary SQL commands into the system's database queries. The flaw represents a classic improper input validation issue that enables attackers to manipulate the database's query execution flow and potentially gain unauthorized access to sensitive information stored within the system's relational database management structure.
This SQL injection vulnerability operates at the core of the application's data processing pipeline, where user-supplied input from the searchdata parameter is directly incorporated into database queries without proper sanitization or parameterization. The vulnerability falls under the CWE-89 category of SQL Injection, which is classified as a high-risk weakness in web application security that can lead to complete database compromise. Attackers can leverage this vulnerability to extract confidential information including user credentials, personal identification details, and other sensitive data stored within the system's database tables. The impact extends beyond simple data exfiltration as the vulnerability may also enable privilege escalation attacks, allowing unauthorized users to gain administrative access to the database management system and potentially escalate their privileges within the broader application environment.
The operational implications of this vulnerability are severe and multifaceted, affecting both the confidentiality and integrity of the bus pass management system's data repository. An attacker exploiting this vulnerability could retrieve all user records, including personal information such as names, contact details, and potentially financial data associated with bus pass transactions. The vulnerability also poses a significant risk to the system's availability as attackers could potentially execute destructive database operations such as data deletion or modification, leading to service disruption and potential loss of critical operational data. From an attacker perspective, this vulnerability aligns with the ATT&CK technique T1071.004 for application layer protocol manipulation and T1213.002 for data from information repositories, enabling comprehensive reconnaissance and data extraction operations. The vulnerability's exploitation requires minimal technical expertise, making it particularly dangerous as it can be leveraged by attackers of varying skill levels to compromise the entire system infrastructure.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements to prevent similar issues from occurring in the future. The primary solution involves implementing proper parameterized queries or prepared statements throughout the application's codebase, ensuring that user input is properly escaped and validated before being incorporated into database operations. Input validation mechanisms should be strengthened to filter out potentially malicious SQL characters and patterns, while output encoding should be implemented to prevent any potential cross-site scripting attacks that could compound the vulnerability. Additionally, the application should implement proper access controls and privilege management to ensure that database connections use minimal required privileges, following the principle of least privilege as outlined in security best practices. Regular security testing including automated vulnerability scanning and manual penetration testing should be conducted to identify and remediate similar vulnerabilities before they can be exploited by malicious actors. The system should also implement comprehensive logging and monitoring capabilities to detect and respond to any suspicious database access patterns or unauthorized access attempts that may indicate exploitation of this or similar vulnerabilities.