CVE-2025-11318: Tipray Data Leakage Prevention RCE Flaw

CVE-2025-11318 Overview

A security vulnerability has been identified in Tipray Data Leakage Prevention System version 1.0, affecting the uploadWxFile.do endpoint. This flaw allows unrestricted file upload through manipulation of the File argument, enabling remote attackers to potentially upload malicious files to vulnerable systems. The exploit has been publicly disclosed, and the vendor was contacted but did not respond to responsible disclosure attempts.

Critical Impact

Remote attackers can exploit unrestricted file upload functionality to potentially execute arbitrary code or compromise system integrity through malicious file uploads.

Affected Products

• Tipray Data Leakage Prevention System 1.0
• Systems utilizing uploadWxFile.do file upload functionality

Discovery Timeline

• 2025-10-06 - CVE-2025-11318 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2025-11318

Vulnerability Analysis

This vulnerability is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) and CWE-284 (Improper Access Control). The affected component, uploadWxFile.do, fails to properly validate uploaded files, allowing attackers to bypass security restrictions and upload arbitrary file types. This type of vulnerability commonly leads to remote code execution when attackers upload web shells or executable scripts that can be subsequently accessed and executed on the target server.

The network-accessible nature of this vulnerability means that attackers can exploit it remotely without requiring prior authentication or user interaction. The exploit has been publicly released, increasing the risk of active exploitation in the wild.

Root Cause

The root cause stems from insufficient input validation and improper access control mechanisms in the file upload handler. The uploadWxFile.do endpoint fails to implement proper file type restrictions, content validation, or access control checks, allowing any file type to be uploaded regardless of its potential to cause harm. This represents a fundamental failure in secure file handling practices where the application trusts user-supplied file data without adequate sanitization.

Attack Vector

The attack can be performed remotely over the network by sending crafted HTTP requests to the vulnerable uploadWxFile.do endpoint. An attacker would manipulate the File parameter to upload malicious content such as web shells, backdoors, or other executable code. Once uploaded, the attacker may be able to access the uploaded file directly if the application does not implement proper access controls on the upload directory.

The exploitation process typically involves:

1. Identifying the vulnerable uploadWxFile.do endpoint on a target system
2. Crafting a malicious file (such as a web shell or script)
3. Submitting the malicious file through the File parameter
4. Accessing the uploaded file to trigger code execution

Technical details and proof-of-concept information can be found in the GitHub Exploit Code Repository and VulDB entry #327199.

Detection Methods for CVE-2025-11318

Indicators of Compromise

• Unusual HTTP POST requests targeting uploadWxFile.do endpoint with suspicious file extensions
• Presence of unexpected files in upload directories (e.g., .php, .jsp, .aspx, .sh files)
• Web server logs showing requests to newly created files in upload locations
• Anomalous file creation activity on the server filesystem

Detection Strategies

• Monitor HTTP traffic for requests to uploadWxFile.do containing potentially malicious file types
• Implement file integrity monitoring on web application directories to detect unauthorized file additions
• Configure web application firewall (WAF) rules to inspect file upload requests for dangerous content types
• Review web server access logs for suspicious patterns targeting the vulnerable endpoint

Monitoring Recommendations

• Enable detailed logging for the Tipray Data Leakage Prevention System web interface
• Set up alerts for file uploads containing executable content or suspicious extensions
• Monitor for post-exploitation indicators such as outbound connections from web server processes
• Regularly audit uploaded file directories for unexpected or unauthorized content

How to Mitigate CVE-2025-11318

Immediate Actions Required

• Restrict network access to the Tipray Data Leakage Prevention System administrative interface
• Implement web application firewall rules to block malicious file upload attempts
• Review and remove any suspicious files from upload directories
• Consider temporarily disabling the uploadWxFile.do functionality until a patch is available

Patch Information

No official patch is currently available from Tipray. The vendor was contacted regarding this vulnerability but did not respond. Organizations should monitor vendor communications for security updates. Additional vulnerability details are available through VulDB CTI ID #327199.

Workarounds

• Implement strict file type whitelist validation at the network perimeter using WAF or reverse proxy
• Restrict access to the vulnerable endpoint through IP-based access controls
• Deploy file upload scanning solutions to inspect and quarantine potentially malicious uploads
• Isolate affected systems in a segmented network zone with restricted outbound access

# Example: Restrict access to vulnerable endpoint using nginx
location /uploadWxFile.do {
    deny all;
    # Or limit to trusted IPs only:
    # allow 10.0.0.0/8;
    # deny all;
}