CVE-2025-9847 Overview
A critical unrestricted file upload vulnerability has been identified in ScriptAndTools Real Estate Management System version 1.0. The vulnerability exists in the register.php file and can be exploited by manipulating the uimage parameter, allowing attackers to upload arbitrary files without proper validation. This weakness enables remote exploitation and could lead to unauthorized code execution on affected systems.
Critical Impact
Remote attackers can exploit this unrestricted file upload vulnerability to upload malicious files, potentially leading to remote code execution, server compromise, and unauthorized access to sensitive real estate management data.
Affected Products
- ScriptAndTools Real Estate Management System 1.0
- Web applications utilizing register.php with the vulnerable uimage parameter
Discovery Timeline
- September 3, 2025 - CVE-2025-9847 published to NVD
- September 10, 2025 - Last updated in NVD database
Technical Details for CVE-2025-9847
Vulnerability Analysis
This vulnerability is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) and CWE-284 (Improper Access Control). The flaw resides in the user registration functionality of the Real Estate Management System, specifically within the register.php file. The uimage parameter, intended for user profile image uploads, lacks proper file type validation and access controls. This allows attackers to bypass expected file restrictions and upload files with dangerous extensions such as PHP scripts, web shells, or other executable content.
The network-based attack vector means that any authenticated user with low privileges can exploit this vulnerability remotely. The exploit has been publicly disclosed, increasing the risk of widespread exploitation against unpatched installations.
Root Cause
The root cause of this vulnerability is the failure to implement proper file upload validation on the server side. The register.php script does not adequately verify the file type, extension, or content of uploaded files through the uimage parameter. This lack of input sanitization and file type restriction allows malicious actors to upload executable files that can be subsequently accessed and executed on the web server.
Attack Vector
The attack is executed remotely over the network with low complexity requirements. An attacker with basic authenticated access can craft a malicious HTTP POST request to the register.php endpoint, manipulating the uimage file upload parameter to include a malicious payload. Once uploaded, the attacker can access the uploaded file directly through the web server, potentially achieving remote code execution.
The exploitation process typically involves:
- Creating a malicious file (e.g., a PHP web shell) disguised or submitted as an image
- Submitting the file through the vulnerable registration form's image upload functionality
- Locating the uploaded file on the server (often in a predictable uploads directory)
- Accessing the uploaded file via HTTP to trigger code execution
Detection Methods for CVE-2025-9847
Indicators of Compromise
- Unexpected file types appearing in user upload directories (e.g., .php, .phtml, .asp files in image folders)
- Web server logs showing direct access to recently uploaded files in the user image directory
- Anomalous HTTP POST requests to register.php with unusual content-type headers
- Presence of web shell signatures or backdoor files on the server
Detection Strategies
- Implement file integrity monitoring on web application upload directories to detect unexpected file creations
- Configure web application firewall (WAF) rules to detect and block file upload attacks targeting register.php
- Monitor web server access logs for requests to uploaded files with executable extensions
- Deploy endpoint detection solutions to identify and alert on web shell activity
Monitoring Recommendations
- Enable verbose logging for the Real Estate Management System application
- Set up alerts for file uploads exceeding normal size or frequency patterns
- Monitor outbound network connections from the web server for command and control activity
- Regularly audit upload directories for suspicious file content and types
How to Mitigate CVE-2025-9847
Immediate Actions Required
- Restrict access to the register.php endpoint until a patch is applied
- Implement server-side file type validation that checks both file extension and MIME type
- Configure the web server to prevent execution of uploaded files (disable PHP execution in upload directories)
- Review upload directories for any existing malicious files and remove them immediately
- Apply strict access controls to limit who can access the registration functionality
Patch Information
As of the last NVD update on September 10, 2025, no official vendor patch has been released for this vulnerability. Organizations should monitor the VulDB entry and vendor communications for patch availability. In the absence of an official fix, implementing the workarounds below is strongly recommended.
Workarounds
- Add server-side validation to restrict file uploads to specific image types (JPEG, PNG, GIF) using both extension and magic byte verification
- Store uploaded files outside the web root directory and serve them through a controlled script
- Rename uploaded files to random, non-executable names without preserving original extensions
- Configure .htaccess or web server rules to deny script execution in upload directories
- Implement Content Security Policy headers to mitigate potential execution of uploaded content
# Apache .htaccess configuration to prevent PHP execution in uploads directory
# Place this file in the uploads directory
<FilesMatch "\.(php|phtml|php3|php4|php5|phps)$">
Order Deny,Allow
Deny from all
</FilesMatch>
# Alternative: Disable PHP engine entirely for the directory
php_flag engine off
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
