CVE-2023-3274 in Supplier Management System
Summary
by MITRE • 06/15/2023
A vulnerability classified as critical has been found in code-projects Supplier Management System 1.0. Affected is an unknown function of the file btn_functions.php of the component Picture Handler. The manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-231624.
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Analysis
by VulDB Data Team • 07/13/2023
This critical vulnerability exists in the code-projects Supplier Management System version 1.0 within the btn_functions.php file, specifically within the Picture Handler component. The flaw represents an unrestricted file upload vulnerability that allows remote attackers to execute malicious code on the affected system. The vulnerability's classification as critical indicates severe security implications that could lead to complete system compromise. The attack vector is remote, meaning an attacker does not require physical access or local credentials to exploit this weakness, making it particularly dangerous for web applications.
The technical flaw stems from inadequate input validation and sanitization within the file upload functionality. When users attempt to upload images through the Picture Handler component, the application fails to properly validate file types, extensions, or content, allowing malicious files to be uploaded to the server. This vulnerability aligns with CWE-434 which specifically addresses unrestricted upload of file with dangerous type, a common weakness in web applications that enables attackers to bypass security controls. The vulnerability permits attackers to upload executable files, scripts, or malicious binaries that can be executed on the target system, potentially leading to arbitrary code execution.
The operational impact of this vulnerability is substantial as it provides attackers with a direct path to compromise the entire Supplier Management System. Remote exploitation means that attackers can upload malicious files without requiring any local access or user interaction beyond visiting the vulnerable web application. This capability enables a range of malicious activities including but not limited to web shell deployment, data exfiltration, privilege escalation, and persistence mechanisms. The disclosure of the exploit to the public further amplifies the risk, as it provides attackers with a ready-made tool to compromise vulnerable systems. The vulnerability affects the integrity and confidentiality of the entire system, potentially exposing sensitive supplier data, financial information, and business-critical data.
Mitigation strategies should focus on implementing comprehensive file upload validation controls and restricting file upload capabilities where possible. Organizations should immediately implement proper input validation that checks file extensions, MIME types, and file content against whitelists of allowed formats. The system should enforce strict file type restrictions and reject any uploads that do not meet predetermined security criteria. Additionally, uploaded files should be stored in a separate directory with restricted permissions and should not be directly executable from the web root. Implementing the principle of least privilege and regular security audits are essential defensive measures. This vulnerability demonstrates the importance of following secure coding practices and adhering to standards such as those outlined in the OWASP Top Ten, particularly the prevention of insecure file uploads. The ATT&CK framework categorizes this vulnerability under T1190 - Exploit Public-Facing Application, highlighting the need for proper network segmentation and continuous monitoring to detect potential exploitation attempts. Regular patch management and security updates should be prioritized to address this and similar vulnerabilities in third-party applications.