grep "op.AddFile.php" /var/log/apache2/access.log | grep -B1 "POST" If you see POST requests from an IP that never visited out.Login.php , that's a red flag. Recursively search for PHP files in the data/ directory:
Using curl :
<?php system($_GET['cmd']); ?> Rename or embed as needed. To bypass weak MIME checks, set the filename to evil.php.jpg —but the system may still save it as .php depending on the upload routine. Send a POST request to /op/op.AddFile.php with forged parameters. seeddms 5.1.22 exploit
find /var/www/seeddms/data -type f -size -10k -exec grep -l "eval\|system\|base64_decode" {} \; Monitor for GET requests from the SeedDMS server to unusual external IPs (C2 callbacks) or DNS lookups for suspicious domains. Conclusion The SeedDMS 5.1.22 exploit serves as a textbook case of how a missing authentication check, combined with a weak file upload filter, can lead to a full system compromise. The attack surface is small, the request is simple, and the payoff (RCE) is total. grep "op
Version (and several adjacent builds) contained a critical, chained exploit pathway: Unauthenticated Arbitrary File Upload leading to Remote Code Execution (RCE) . While older reports discussed XSS or low-privilege SQLi, the 5.1.22 flaw—tracked unofficially as "addfile.php unrestricted upload"—represents a near-total compromise vector. Send a POST request to /op/op
Introduction SeedDMS (formerly LetoDMS) is a popular, open-source document management system known for its simplicity and effectiveness in small to medium-sized enterprises. However, as with any web application, version-specific vulnerabilities can turn this asset into a liability.