Attack Chain

1. An attacker authenticates to the SuiteCRM application.
2. The attacker crafts a malicious GET request targeting the index.php endpoint.
3. The attacker injects SQL code into the record parameter of the GET request, specifically targeting the Users module’s DetailView action.
4. The SuiteCRM application processes the crafted request without proper sanitization of the record parameter.
5. The injected SQL code is executed within the context of the database query.
6. The attacker leverages time-based SQL injection techniques to infer information about the database structure and content by observing the response times.
7. Sensitive data is extracted from the database through repeated time-based injection attacks.
8. The attacker exfiltrates the extracted data.

Impact

Successful exploitation of this SQL injection vulnerability can lead to the unauthorized disclosure of sensitive data stored within the SuiteCRM database. The scope of the impact depends on the level of access granted to the compromised user account, but could include customer data, financial information, or other confidential business data. While there is no count on victims available, all SuiteCRM 7.10.7 installations are vulnerable.

Recommendation

• Upgrade to a patched version of SuiteCRM that addresses CVE-2019-25664 to remediate the SQL injection vulnerability.
• Deploy the Sigma rule provided below to detect exploitation attempts targeting the vulnerable index.php endpoint.
• Implement input validation and sanitization measures within the SuiteCRM application to prevent SQL injection attacks.
• Monitor web server logs for suspicious GET requests containing potentially malicious SQL code in the record parameter.