CVE-2022-31973 in Online Fire Reporting System
Summary
by MITRE • 06/02/2022
Online Fire Reporting System v1.0 is vulnerable to Delete any file via /ofrs/classes/Master.php?f=delete_img.
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Analysis
by VulDB Data Team • 06/05/2022
The Online Fire Reporting System v1.0 contains a critical file deletion vulnerability that allows unauthorized users to remove arbitrary files from the system through a manipulated request to the Master.php endpoint. This vulnerability exists within the file management functionality where the application fails to properly validate user input before executing file deletion operations. The specific endpoint /ofrs/classes/Master.php?f=delete_img accepts a parameter that controls which file should be deleted, making it susceptible to directory traversal attacks and unauthorized file manipulation. The flaw represents a classic case of improper input validation and inadequate access controls that directly violates security best practices.
This vulnerability falls under the category of path traversal and arbitrary file deletion, which maps to CWE-22 Path Traversal and CWE-77 Path Traversal. The system lacks proper authentication checks and authorization controls before allowing file operations, creating a scenario where any authenticated user or even unauthenticated attacker could potentially exploit this weakness. The attack vector is particularly dangerous because it allows for complete file system manipulation, potentially leading to system compromise through deletion of critical application files, configuration data, or even system binaries. The vulnerability enables attackers to execute operations that align with ATT&CK technique T1485 Data Destruction, where adversaries target system files to cause operational disruption.
The operational impact of this vulnerability extends beyond simple file deletion, as it could enable attackers to remove essential application components, logs, or configuration files that maintain system integrity and security. An attacker could systematically delete core application files to cause denial of service or create backdoors by replacing legitimate files with malicious counterparts. The system's failure to implement proper input sanitization creates a chain of potential secondary effects including data loss, system instability, and potential escalation to privilege escalation attacks. The vulnerability also exposes sensitive system information through the deletion of backup files or log data that could aid in further exploitation attempts.
Mitigation strategies should focus on implementing comprehensive input validation and access control mechanisms within the application. The system must validate all user-supplied input through strict whitelisting approaches, ensuring that only predefined acceptable file paths or identifiers are processed. Authentication and authorization checks should be enforced before any file operation is executed, requiring proper user roles and permissions. The application should implement proper file system access controls and restrict file operations to specific directories. Additionally, logging and monitoring should be enhanced to detect suspicious file deletion activities. The solution must address the underlying architectural flaw by implementing proper separation of concerns and ensuring that file operations are performed through secure, validated interfaces that prevent directory traversal attacks. Regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in future releases.