CVE-2023-5636 in Education Portal
Summary
by MITRE • 12/01/2023
Unrestricted Upload of File with Dangerous Type vulnerability in ArslanSoft Education Portal allows Command Injection.
This issue affects Education Portal: before v1.1.
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Analysis
by VulDB Data Team • 05/20/2026
The CVE-2023-5636 vulnerability represents a critical security flaw in the ArslanSoft Education Portal software that combines insecure file upload functionality with command injection capabilities. This vulnerability exists in versions prior to v1.1 and demonstrates a classic example of how improper input validation can lead to severe remote code execution risks. The flaw stems from the application's failure to properly validate file types during the upload process, allowing malicious actors to bypass security controls and upload files with dangerous extensions that can be executed on the server. This issue falls under the CWE-434 category of Unrestricted Upload of File with Dangerous Type, which is a well-documented weakness in web applications where the system does not adequately verify the type or content of uploaded files. The vulnerability creates a pathway for attackers to escalate privileges and gain unauthorized control over the affected system.
The technical exploitation of this vulnerability occurs when an attacker uploads a file with a dangerous extension such as .php, .jsp, or .asp that can be executed on the server. The Education Portal's upload functionality does not properly validate file extensions or content, allowing attackers to upload malicious scripts that can be executed by the web server. Once uploaded, these files can be accessed through predictable or guessable URLs, enabling the execution of arbitrary commands on the server. This command injection capability allows attackers to perform actions such as reading sensitive files, executing system commands, establishing reverse shells, or even compromising the entire underlying infrastructure. The vulnerability is particularly dangerous because it combines multiple attack vectors into a single exploit chain, where the file upload serves as the initial foothold for command execution. The lack of proper file type validation and content inspection creates an environment where attackers can easily bypass security measures and gain persistent access to the system.
The operational impact of CVE-2023-5636 extends beyond simple data theft or service disruption to encompass full system compromise and potential lateral movement within network environments. Organizations using affected versions of the ArslanSoft Education Portal face significant risks including unauthorized access to educational data, potential exposure of student and staff information, and the possibility of using the compromised system as a launchpad for attacks on other network resources. The vulnerability can result in complete system takeover, data exfiltration, and the establishment of persistent backdoors that allow attackers to maintain access over extended periods. From an ATT&CK framework perspective, this vulnerability maps to multiple techniques including T1190 (Exploit Public-Facing Application), T1059 (Command and Scripting Interpreter), and T1078 (Valid Accounts) as attackers can leverage the compromised system to move laterally within networks. The impact is particularly severe in educational environments where sensitive personal data, academic records, and research information are stored, making such compromises not just technically damaging but also potentially legally and ethically problematic.
Organizations should immediately upgrade to version 1.1 or later of the ArslanSoft Education Portal to remediate this vulnerability. The recommended mitigations include implementing proper file type validation, restricting file upload capabilities to trusted users only, and deploying web application firewalls to monitor and block suspicious upload attempts. Additional security measures should include disabling unnecessary file upload features, implementing strict content validation for uploaded files, and conducting regular security audits of the application's file handling mechanisms. Organizations should also establish monitoring procedures to detect unauthorized file uploads and implement proper access controls to limit who can upload files to the system. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies to prevent similar issues in other applications. Security teams should also consider implementing automated vulnerability scanning tools that can detect insecure file upload configurations and provide alerts when such vulnerabilities are identified in web applications. Regular security training for developers on secure file handling practices and the importance of input validation can help prevent similar vulnerabilities from being introduced in future versions of the software.