Once inside, they examined the users table to extract password hashes. If cracking failed, they simply updated the admin password hash directly in the database:
An attacker with document creation privileges creates a document named:
: Implement comprehensive logging of authentication attempts, file uploads, and administrative actions. Monitor logs for suspicious activities such as failed login attempts or unusual file upload patterns. seeddms 5.1.22 exploit
: Despite being patched for the specific RCE vulnerability in earlier versions, SeedDMS 5.1.22 remains susceptible to file upload attacks in certain configurations. The platform allows document uploads, which attackers can exploit by uploading malicious PHP webshells. A typical PHP backdoor includes:
Versions 5.1.24 (and likely earlier) suffer from a directory traversal vulnerability in the "Log files management" feature. The "Remove file" functionality fails to sanitize user input, allowing attackers with admin privileges to delete arbitrary files. Once inside, they examined the users table to
Review all user accounts to ensure that only authorized individuals have permission to upload documents. Remove the Add Document capability for any user roles that do not strictly require it. Conclusion
The attacker navigates to the "Add Document" section. Instead of a PDF or Word document, they upload a PHP web shell (e.g., shell.php ). : Despite being patched for the specific RCE
Later versions of 6.x were found to contain open redirects, and 5.x branches received updates to fix similar vulnerabilities. Key Security Considerations for SeedDMS 5.1.22:
The attacker prepares a lightweight PHP web shell. A typical minimal payload looks like this:
Understanding SeedDMS and Historical Vulnerability Patterns is an open-source, web-based document management system (DMS) tailored for small to medium-sized enterprises. Built on PHP and utilizing databases like MySQL, it acts as a central repository for storing, tracking, and sharing digital documents.
For system administrators, the message is clear: . For security researchers and penetration testers, SeedDMS 5.1.22 provides a valuable case study of common web vulnerabilities in legacy applications.