CVE-2019-9918 in Harmis JE Messenger
Summary
by MITRE
An issue was discovered in the Harmis JE Messenger component 1.2.2 for Joomla!. Input does not get validated and queries are not written in a way to prevent SQL injection. Therefore arbitrary SQL-Statements can be executed in the database.
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Analysis
by VulDB Data Team • 08/17/2023
The CVE-2019-9918 vulnerability represents a critical SQL injection flaw within the Harmis JE Messenger component version 1.2.2 for Joomla environment.
The technical implementation of this vulnerability aligns with CWE-89, which specifically addresses SQL injection weaknesses in software applications. The flaw demonstrates poor secure coding practices where user inputs are directly incorporated into SQL queries without proper sanitization or parameter binding mechanisms. This vulnerability operates at the application layer and can be exploited through various attack vectors including form submissions, URL parameters, or API endpoints that interact with the vulnerable component. The lack of input validation creates a direct pathway for attackers to bypass authentication mechanisms and execute malicious SQL commands that the application's database will process with elevated privileges.
From an operational perspective, the impact of CVE-2019-9918 extends beyond simple data theft to encompass complete system compromise and potential data destruction. Successful exploitation allows attackers to extract sensitive user credentials, personal information, and system configuration details stored within the Joomla CMS platforms often host critical business applications and user databases, the potential for widespread damage increases significantly when this vulnerability is exploited in production environments. The attack surface is particularly concerning as it affects the core messaging component that likely handles user communications and system notifications.
Security mitigations for CVE-2019-9918 must address both immediate remediation and long-term secure coding practices. The primary solution involves updating the Harmis JE Messenger component to a patched version that implements proper input validation and parameterized queries. Organizations should also implement web application firewalls to detect and block suspicious SQL injection attempts, while conducting thorough security audits of all Joomla! extensions to identify similar vulnerabilities. The remediation process should include disabling the vulnerable component until patching is complete, implementing proper access controls, and establishing monitoring procedures to detect unauthorized database access attempts. Additionally, security teams should conduct regular penetration testing and code reviews to ensure adherence to secure coding standards and prevent similar vulnerabilities from emerging in other components or custom applications.