Description

Unrestricted upload of file with dangerous type vulnerability in TRtek Technological Products Computer Software Hardware Industry and Trade Limited Company Software Repository Management allows Upload a Web Shell to a Web Server. This issue affects Software Repository Management: before 2fb4acee.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-08-25T15:16:30.180Z",
  "pubdate": "2026-08-25T15:16:30.180Z",
  "executiveSummary": "A critical unrestricted file upload vulnerability exists within the TRtek Technological Products Software Repository Management system, affecting versions prior to 2fb4acee.\nThis flaw permits an authenticated or unauthenticated attacker, depending on system configuration, to upload arbitrary files with dangerous extensions to the web server.\nThe vulnerability stems from improper validation of file types during the upload process, enabling an attacker to bypass security controls and store malicious scripts directly on the server filesystem.\nThe primary risk implication is the potential for Remote Code Execution (RCE). By successfully uploading a web shell, an attacker can gain unauthorized control over the server environment, leading to full system compromise, data exfiltration, unauthorized modification of repository assets, and lateral movement within the network infrastructure.\nThis vulnerability represents a significant security oversight in the handling of user-supplied files, necessitating immediate remediation to prevent persistent backend exploitation.",
  "technicalDetails": "The vulnerability is categorized as an unrestricted upload of a file with a dangerous type, which effectively allows the deployment of server-side executable code. The root cause lies in the application's failure to perform adequate server-side validation of the 'Content-Type' header and the file extension of uploaded artifacts. Instead of enforcing a strict allow-list of safe file formats, the application relies on weak or non-existent client-side filters, allowing the ingestion of executable scripts such as .php, .jsp, or .asp files.\nThe attack flow proceeds as follows: First, the attacker identifies the repository upload endpoint. Second, the attacker crafts a malicious web shell script designed to execute system-level commands on the underlying web server. Third, the attacker initiates a POST request to the upload handler, masquerading the web shell as a legitimate software component. Because the application lacks robust server-side sanitization or MIME-type checking, the file is successfully saved to the web-accessible directory.\nOnce the file is written to the server's filesystem, the attacker triggers the payload by navigating to the file's URL via a browser or HTTP client. The web server then interprets and executes the malicious script within the security context of the web server process (e.g., www-data or system). This facilitates immediate Remote Code Execution (RCE).\nPost-exploitation impact is severe. With RCE achieved, the attacker can manipulate the repository contents, execute arbitrary operating system commands, install persistent backdoors, and gain access to sensitive database configurations or environment variables. The lack of granular file system permissions often allows the attacker to traverse the directory structure, escalating the impact beyond the repository management system to the host OS itself.\nThis vulnerability affects Software Repository Management versions prior to the commit 2fb4acee. Exploitation does not require advanced access if the upload interface is publicly accessible, although it may require existing credentials if the repository management function is behind an authentication wall."
}