Faulty handling of file paths can allow users to view sensitive system files (like /etc/passwd on Linux) that they shouldn't have access to. Identifying the Version
Public exploit code is available for CVE‑2022‑28479 (stored XSS) via GitHub, allowing even moderately skilled attackers to launch attacks. However, for the CSRF vulnerabilities in 5.1.22, no readily available exploit code has been published, meaning that attackers must develop their own proof‑of‑concept or modify existing scripts. The absence of public exploits should not be considered a defense; many targeted attacks rely on custom‑built tools.
When an administrator reviews the system logs or event history, this payload executes silently. The script extracts the admin’s session cookie and transmits it to the attacker's server, resulting in immediate . 2. File Upload Restrictions & The RCE Threat Landscape
As detailed by Bryan Leong on Medium , an attacker can create a PHP script, upload it as a new document version, and then directly access the uploaded file in the /data/ directory to execute commands. 2. SQL Injection
SeedDMS organizes uploaded files using a standardized directory structure indexed by document ID. seeddms 5.1.22 exploit
: Enforce session.cookie_httponly = On to block JavaScript from accessing document.cookie parameters.
To check if your installation is at risk, log into your SeedDMS instance and look at the footer of the page or the "Admin" section. If it reads or earlier, your system is likely vulnerable. Remediation and Best Practices
Based on reported testing, an attacker might follow these steps: with a low-privilege user account. Navigate to a "Add Document" section.
Use code with caution. The file is saved with a .php extension (e.g., shell.php ). 3. Uploading the Malicious Document Faulty handling of file paths can allow users
When any user (including the attacker) triggers the "Clear Cache" functionality, the injected command executes.
After gaining admin access through credential reuse, the attacker navigates to the file upload section and uploads shell.php containing a PHP web shell:
?>
The following is a proof of concept code that demonstrates the exploit: The absence of public exploits should not be
The server accepts the input and permanently saves it to the event ledger. Phase 2: Execution and Impact
The most significant security concern for users on this version is , an authenticated Remote Command Execution (RCE) vulnerability. Although patches were introduced in versions 5.1.11 and later, many security scanners and researchers test for variants of this flaw in subsequent releases like 5.1.22. Key Vulnerability: Authenticated RCE (CVE-2019-12744)
Alternatively, the attacker might inject the payload into the “Global Keywords” menu by adding a new category with a malicious name. Any user who subsequently views a document associated with that category will have the payload executed. This method is particularly dangerous because it can affect users across all privilege levels, not just administrators.