CVE-2006-4242 in Jim Instant Messaging Component
Summary
by MITRE
PHP remote file inclusion vulnerability in install.jim.php in the JIM 1.0.1 component for Joomla or Mambo allows remote attackers to execute arbitrary PHP code via a URL in the mosConfig_absolute_path parameter.
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Analysis
by VulDB Data Team • 07/14/2024
The vulnerability identified as CVE-2006-4242 represents a critical remote file inclusion flaw within the JIM 1.0.1 component for Joomla and Mambo content management systems. This vulnerability resides in the install.jim.php file and demonstrates a classic path traversal and code execution vulnerability that has been documented in numerous security assessments over the years. The flaw specifically manifests when the application fails to properly validate or sanitize user-supplied input parameters, creating an avenue for malicious actors to inject and execute arbitrary PHP code on the target server. This type of vulnerability falls under the category of insecure direct object reference issues and is commonly classified as CWE-98 in the Common Weakness Enumeration framework, which specifically addresses improper validation of input leading to remote code execution.
The technical implementation of this vulnerability occurs through the mosConfig_absolute_path parameter which is susceptible to manipulation by remote attackers. When an attacker crafts a malicious URL and injects it into this parameter, the vulnerable application processes the input without adequate sanitization, allowing the attacker to specify a remote URL that contains malicious PHP code. The server then attempts to include this remote file, executing the malicious code within the context of the web application's privileges. This attack vector demonstrates the dangerous combination of weak input validation and the use of dynamic file inclusion functions such as include or require, which are commonly exploited in remote file inclusion attacks. The vulnerability is particularly concerning because it does not require authentication and can be exploited from any remote location, making it a prime target for automated exploitation tools.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete control over the affected web server and its resources. Successful exploitation allows malicious actors to upload additional malware, establish backdoors, steal sensitive data, modify website content, and potentially use the compromised server as a launching point for further attacks within the network. The vulnerability affects both Joomla and Mambo platforms, which were widely used content management systems during the period when this vulnerability was prevalent, making it a significant threat to numerous websites and organizations. According to the ATT&CK framework, this vulnerability maps to the T1190 technique for Exploit Public-Facing Application, and represents a critical weakness in the application's input validation and access control mechanisms that can lead to complete system compromise.
Mitigation strategies for CVE-2006-4242 must address both immediate remediation and long-term security hardening measures. The primary fix involves updating to patched versions of the JIM component for Joomla or Mambo, as vendors typically release security patches to address such vulnerabilities. Additionally, administrators should implement input validation measures that sanitize all user-supplied parameters, particularly those used in file inclusion operations. The use of allow_url_include and allow_url_fopen directives should be disabled in php.ini configurations to prevent remote file inclusion attacks. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though they should not be considered a substitute for proper code-level fixes. Security monitoring and log analysis should be implemented to detect suspicious file inclusion patterns, and regular security assessments should be conducted to identify similar vulnerabilities in other components of the web application stack. The vulnerability also underscores the importance of following secure coding practices and implementing proper input validation techniques to prevent similar issues from occurring in future development cycles.