CVE-2009-4938 in Com Jvideo
Summary
by MITRE
SQL injection vulnerability in the JVideo! (com_jvideo) component 0.3.11c Beta and 0.3.x for Joomla! allows remote attackers to execute arbitrary SQL commands via the user_id parameter in a user action to index.php.
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Analysis
by VulDB Data Team • 09/05/2019
The CVE-2009-4938 vulnerability represents a critical sql injection flaw within the JVideo version 0.3.11c Beta and 0.3.x series. This vulnerability specifically targets the user_id parameter in the index.php file, creating an exploitable condition that allows remote attackers to execute arbitrary sql commands against the underlying database. The flaw exists due to inadequate input validation and sanitization of user-supplied data, particularly within the user action handling mechanism of the jvideo component. The vulnerability is classified under the CWE-89 category, which specifically addresses sql injection weaknesses in software applications.
The technical implementation of this vulnerability stems from the component's failure to properly sanitize or escape the user_id parameter before incorporating it into sql query constructions. When a user performs an action through the index.php endpoint, the component directly concatenates the unvalidated user_id value into sql statements without appropriate parameterization or input filtering. This creates a pathway for malicious actors to inject crafted sql payloads that can manipulate the database structure, extract sensitive information, or even gain unauthorized access to the underlying system. Attackers can exploit this by submitting malicious user_id values that contain sql injection payloads designed to bypass authentication, retrieve confidential data, or modify database contents.
The operational impact of CVE-2009-4938 extends beyond simple data theft, as it provides attackers with significant control over the affected joomla installation. Successful exploitation can result in complete database compromise, allowing attackers to access user credentials, personal information, and potentially escalate privileges within the application. The vulnerability affects all joomla installations running the vulnerable jvideo component versions, making it particularly dangerous in environments where multiple users interact with the platform. From an att&ck framework perspective, this vulnerability maps to the privilege escalation and defense evasion techniques, as attackers can use it to maintain persistent access and avoid detection while exfiltrating sensitive data.
Mitigation strategies for this vulnerability require immediate patching of the jvideo component to version 0.3.12 or later, which contains the necessary input validation fixes. System administrators should also implement proper input sanitization measures including parameterized queries, prepared statements, and comprehensive input validation routines. Additional protective measures include implementing web application firewalls to detect and block sql injection attempts, restricting database user permissions to minimize potential damage from successful attacks, and conducting regular security audits of third-party components. The vulnerability underscores the importance of maintaining up-to-date software components and following secure coding practices that prevent sql injection through proper input handling and query construction techniques.