Description

Official Document Management System developed by 2100 Technology has an Arbitrary File Upload vulnerability, allowing authenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-17T10:16:42.403Z",
  "pubdate": "2026-08-17T10:16:42.403Z",
  "executiveSummary": "The Official Document Management System developed by 2100 Technology suffers from an Arbitrary File Upload vulnerability. This security flaw enables authenticated remote attackers to upload and execute malicious web shell backdoors, leading to arbitrary remote code execution on the underlying server.\nThe vulnerability poses severe risk implications, potentially compromising the confidentiality, integrity, and availability of the affected system and stored documents. Successful exploitation allows an attacker to execute arbitrary commands within the context of the web application server process.\nExploitation requires authenticated access to the application, indicating that an attacker must first obtain valid user credentials. Once authenticated, the attacker can leverage the vulnerable file upload mechanism to introduce executable server-side scripts into the web root or accessible directories.\nAffected systems include deployments of the Official Document Management System by 2100 Technology. Immediate remediation is necessary to restrict unauthorized file types and prevent arbitrary code execution vectors.",
  "technicalDetails": "The vulnerability exists within the file upload functionality of the Official Document Management System developed by 2100 Technology. The root cause stems from insufficient validation, sanitization, and restriction of uploaded file types and extensions by the vulnerable component handling file uploads.\nAttackers authenticated to the application can interact with the file upload endpoint to submit malicious files, such as web shells disguised as or bypassing allowed document formats. Because the application fails to adequately enforce security policies on file extensions and content types, the uploaded scripts are stored directly within the web-accessible file structure of the server.\nThe attack flow proceeds as follows: First, the authenticated attacker crafts a malicious payload containing server-side scripting code designed to execute operating system commands. Second, the attacker uploads this payload through the application interface designed for document management. Third, the application accepts the file without performing rigorous validation of the file extension or MIME type, saving the file to disk.\nFinally, the attacker triggers the execution of the uploaded web shell by issuing an HTTP request directly to the stored file path via the network. Upon receiving the request, the web server processes and executes the script, granting the attacker arbitrary code execution capabilities on the server.\nThe technical requirements for this attack include network exposure of the application, valid authentication credentials, and standard user privileges within the application. The post-exploitation impact includes complete system compromise, unauthorized data access, lateral movement within the network, and deployment of secondary payloads."
}