Attack Chain

1. The attacker identifies the userSignup.php endpoint as a potential target for SQL injection.
2. The attacker crafts a malicious POST request containing SQL injection payloads within the email parameter.
3. The attacker sends the crafted POST request to the userSignup.php endpoint.
4. The MedDream PACS Server processes the request without proper sanitization of the email parameter.
5. The injected SQL code is executed against the backend MySQL database.
6. The attacker retrieves sensitive data from the database, such as usernames, passwords, patient records, or other confidential information.

Impact

Successful exploitation of this vulnerability can result in the unauthorized disclosure of sensitive patient data, potentially leading to violations of privacy regulations and reputational damage. Attackers may also be able to modify or delete data, disrupt system operations, or gain further access to the server. The number of affected installations is unknown.

Recommendation

• Apply the latest patches or upgrades provided by MedDream to address CVE-2018-25372.
• Implement input validation and sanitization measures to prevent SQL injection attacks.
• Deploy the Sigma rule to detect exploitation attempts targeting the userSignup.php endpoint.
• Monitor web server logs for suspicious POST requests to userSignup.php containing SQL syntax in the email parameter.