CVE-2018-17394 in Timetable Schedule
Summary
by MITRE
SQL Injection exists in the Timetable Schedule 3.6.8 component for Joomla! via the eid parameter.
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Analysis
by VulDB Data Team • 07/03/2025
The vulnerability identified as CVE-2018-17394 represents a critical sql injection flaw within the Timetable Schedule component version 3.6.8 for Joomla websites, making this vulnerability particularly concerning for organizations relying on these scheduling functionalities. The flaw allows unauthorized users to manipulate database queries through crafted input parameters, potentially leading to complete database compromise.
The technical implementation of this sql injection vulnerability stems from inadequate input validation and sanitization within the component's handling of the eid parameter. When the component processes user-supplied input through this parameter, it fails to properly escape or filter special characters that could alter the intended sql query structure. This allows attackers to inject malicious sql code that executes within the database context, bypassing normal authentication and authorization mechanisms. The vulnerability falls under the CWE-89 category of sql injection, which is classified as a high-risk vulnerability due to its potential for data exfiltration, data manipulation, and complete system compromise. Attackers can leverage this vulnerability to extract sensitive information such as user credentials, database schema details, and other confidential data stored within the affected system.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to perform a wide range of malicious activities within the compromised Joomla versions that incorporate the vulnerable Timetable Schedule component, particularly those with scheduling functionalities that rely on user input for event identification. This creates a significant risk for educational institutions, corporate organizations, and any entity managing time-sensitive information through Joomla! platforms.
Mitigation strategies for CVE-2018-17394 should prioritize immediate remediation through the official component update to version 3.6.9 or later, which contains the necessary patches to address the sql injection vulnerability. Organizations should implement comprehensive input validation measures at multiple layers including application-level filtering, parameterized queries, and proper escape sequence handling for all user-supplied data. Network-based defenses such as web application firewalls and intrusion detection systems can provide additional protection by monitoring for suspicious sql injection patterns and blocking malicious requests before they reach the vulnerable component. Security hardening practices including regular security audits, privilege minimization, and database access controls should be implemented to reduce the potential impact of successful exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date third-party components and following secure coding practices that align with industry standards such as those outlined in the owasp top ten and mitre att&ck framework for defensive measures against sql injection attacks.