CVE-2006-4556 in JIM Component
Summary
by MITRE
** DISPUTED ** PHP remote file inclusion vulnerability in index.php in the JIM component for Mambo and Joomla! allows remote attackers to execute arbitrary PHP code via a URL in the mosConfig_absolute_path parameter. NOTE: another researcher has stated that the product distribution does not include an index.php file. Also, this might be related to CVE-2006-4242.
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability described in CVE-2006-4556 represents a remote file inclusion flaw that was reportedly present in the JIM component for Mambo and Joomla! platforms. This issue specifically targeted the index.php file within the component's directory structure, creating a potential entry point for malicious actors to execute arbitrary code on affected systems. The vulnerability's classification as disputed highlights the uncertainty surrounding its actual existence and exploitation capabilities, as confirmed by another security researcher who noted that the standard product distribution did not include the indexed file referenced in the original report. This discrepancy underscores the importance of thorough verification when assessing security vulnerabilities, particularly when dealing with component-specific files that may not be present in all installations or may have been modified by third parties.
The technical exploitation of this vulnerability would have occurred through manipulation of the mosConfig_absolute_path parameter, which served as a vector for injecting malicious URLs into the application's execution flow. When the application processed this parameter without proper validation or sanitization, it would have attempted to include and execute the remote file specified in the URL, effectively allowing attackers to run arbitrary PHP code on the target server. This type of vulnerability falls under the category of remote code execution, which represents one of the most severe classes of web application flaws. The weakness aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and more specifically with CWE-94, which addresses the execution of arbitrary code or commands. The vulnerability's nature demonstrates how parameter manipulation can lead to complete system compromise when applications fail to properly validate user input.
The operational impact of this vulnerability would have been significant for organizations running affected versions of Mambo or Joomla platforms at the time, which meant that a single vulnerability could affect numerous websites and organizations simultaneously.
The disputed nature of CVE-2006-4556 raises important questions about vulnerability verification and the reliability of security reports, particularly when inconsistencies arise between different researchers or when product distributions do not match the reported vulnerability characteristics. This situation demonstrates the need for thorough validation processes in vulnerability research, including confirmation of the actual presence of the vulnerable code in standard installations. Additionally, the potential relationship to CVE-2006-4242 suggests that these vulnerabilities may have been part of a broader class of issues affecting the Mambo and Joomla! ecosystems during that time period. Organizations should have implemented comprehensive input validation and sanitization practices to prevent exploitation of such flaws, including the use of allowlists for file inclusion parameters and proper parameter validation. The incident also highlights the importance of maintaining current and accurate vulnerability databases, as well as the need for security professionals to verify reported vulnerabilities against actual product distributions rather than relying solely on initial reports. Modern security practices would involve implementing web application firewalls, regular security assessments, and robust input validation mechanisms to prevent similar remote file inclusion vulnerabilities from being exploited in contemporary web applications.