CVE-2018-25170: DoceboLMS SQLi — Patch Guide

Overview

A critical SQL injection vulnerability exists in DoceboLMS version 1.2. This flaw allows unauthenticated attackers to send specially crafted requests to the platform, enabling them to execute unauthorized commands on the underlying database.

Vulnerability Details

In simple terms, the application fails to properly validate or sanitize user input in specific parameters (id, idC, and idU) within the lesson.php endpoint. An attacker can exploit this by injecting malicious SQL code fragments into these parameters via a standard web browser or automated tools. Because no authentication is required, any external party can send a manipulated GET request to the server to interact directly with the database.

Potential Impact

The primary risk is unauthorized access to the entire database connected to the DoceboLMS application. Attackers can leverage this vulnerability to:

• Extract sensitive information, including user credentials, personal data, and proprietary course content.
• Read, modify, or delete database records, potentially corrupting the learning platform’s data.
• Use the database server as a foothold for further attacks within the network.

Successful exploitation could lead to a significant data breach, operational disruption, and non-compliance with data protection regulations. For context on the consequences of such incidents, recent data breach reports are available at breach reports.

Remediation and Mitigation

The most effective action is to upgrade DoceboLMS to a patched version immediately. Contact the vendor for information on fixed releases. If an immediate upgrade is not possible, apply the following mitigations:

1. Input Validation and Parameterization: Implement strict input validation for all user-supplied data. All database queries must use parameterized statements or prepared statements to separate SQL code from data.
2. Web Application Firewall (WAF): Deploy a WAF in front of the application configured with rules to block SQL injection patterns. This can provide a crucial temporary layer of defense.
3. Network Controls: Restrict network access to the DoceboLMS administration interface and application server to only trusted IP addresses where feasible.
4. Review and Monitor: Audit database and application logs for any suspicious query patterns or unauthorized access attempts. Assume credentials stored in the database may be compromised and plan for resets.

For ongoing updates on such threats and patches, follow our security news section. Organizations using this software should treat this vulnerability as a high-priority issue requiring immediate action to prevent compromise.