CVE-2022-41504 in Billing System Project
Summary
by MITRE • 10/18/2022
An arbitrary file upload vulnerability in the component /php_action/editProductImage.php of Billing System Project v1.0 allows attackers to execute arbitrary code via a crafted PHP file.
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Analysis
by VulDB Data Team • 10/18/2022
The CVE-2022-41504 vulnerability represents a critical arbitrary file upload flaw within the Billing System Project version 1.0, specifically targeting the /php_action/editProductImage.php component. This vulnerability arises from insufficient input validation and inadequate file type checking mechanisms that permit attackers to upload malicious PHP files to the server. The flaw exists in the application's file handling logic where user-supplied file names and content are not properly sanitized or restricted, creating an avenue for remote code execution. The vulnerability is particularly dangerous because it allows attackers to bypass normal security controls and directly deploy malicious code on the target system.
From a technical perspective, this vulnerability manifests as a failure to implement proper file validation controls, which aligns with CWE-434, the weakness of allowing untrusted data to be uploaded to a web server. The flaw operates by accepting file uploads without verifying the file extension, content type, or file signature, enabling attackers to upload PHP scripts that can be executed by the web server. The vulnerability is classified as a remote code execution vector because an attacker can upload a web shell or malicious PHP payload that executes with the privileges of the web server process. This represents a classic case of insecure file upload handling where the application fails to distinguish between legitimate image files and potentially malicious code.
The operational impact of CVE-2022-41504 is severe and multifaceted, as it provides attackers with persistent access to the compromised system. Once an attacker successfully uploads a malicious file, they can execute arbitrary commands, potentially leading to full system compromise, data exfiltration, or use of the system as a launchpad for further attacks within the network. The vulnerability affects the confidentiality, integrity, and availability of the billing system, as attackers can modify or delete critical business data, disrupt services, or establish backdoors for continued access. This flaw particularly impacts organizations using the Billing System Project v1.0, as it provides a straightforward path to system compromise that requires minimal technical expertise to exploit.
Effective mitigation strategies for CVE-2022-41504 must address both the immediate vulnerability and broader security practices. Organizations should implement strict file type validation by checking file extensions against a whitelist of approved formats such as jpg, png, and gif, while also verifying the actual file content using magic number checking. The upload directory should be configured with restricted permissions and separated from the web root to prevent direct execution of uploaded files. Additionally, implementing content security policies, using unique file names, and storing uploaded files outside the web-accessible directory are essential defensive measures. From an ATT&CK framework perspective, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1059.007 (Command and Scripting Interpreter: PHP), highlighting the need for network segmentation and application-level protections. Regular security updates, input validation improvements, and comprehensive security testing should be implemented to prevent similar vulnerabilities in future development cycles and maintain overall system resilience against such exploits.