Overview
An alarming security vulnerability has been identified in TDuckCloud version 5.1, a widely-used cloud storage solution. This vulnerability, designated as CVE-2025-57631, enables a remote attacker to execute arbitrary code via the ‘Add a file upload’ module, potentially compromising systems and causing data leakage. Given the critical role of cloud storage in modern digital infrastructure, this vulnerability warrants urgent attention to prevent any potential threats.
Vulnerability Summary
CVE ID: CVE-2025-57631
Severity: Critical (9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
TDuckCloud | Version 5.1
How the Exploit Works
The vulnerability resides in the ‘Add a file upload’ module of TDuckCloud. An attacker can exploit this flaw by injecting malicious SQL code into the file upload request. Due to inadequate input sanitization in the module, the injected code can be executed, allowing the attacker to manipulate the database and potentially execute arbitrary code, compromising the system.
Conceptual Example Code
Below is a
conceptual
example of how the vulnerability might be exploited. This is a hypothetical HTTP request with a malicious SQL injection payload:
POST /file/upload HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"file_name": "test.jpg', DROP TABLE users; --",
"file_content": "..."
}In this example, the attacker includes a SQL command (‘DROP TABLE users; –‘) in the file_name field. If the system processes this request, it may inadvertently execute this command, leading to potential data loss.
Recommended Mitigation
The best way to mitigate this vulnerability is to apply the vendor patch as soon as it becomes available. This patch is designed to correct the flaw by implementing proper input sanitization to prevent SQL injection attacks.
In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These tools can monitor and filter out malicious SQL commands in HTTP requests, thereby reducing the risk of exploitation.
It’s also recommended to follow best practices such as principle of least privilege (PoLP) and regular system audits to further ensure system security.
