CVE-2006-6635 in JumbaCMS
Summary
by MITRE
PHP remote file inclusion vulnerability in includes/functions.php in JumbaCMS 0.0.1 allows remote attackers to execute arbitrary PHP code via a URL in the jcms_root_path parameter.
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Analysis
by VulDB Data Team • 08/01/2024
The vulnerability identified as CVE-2006-6635 represents a critical remote file inclusion flaw within the JumbaCMS content management system version 0.0.1. This vulnerability resides in the includes/functions.php file and specifically targets the jcms_root_path parameter, creating a pathway for malicious actors to execute arbitrary PHP code on the affected system. The flaw demonstrates a classic remote code execution vulnerability that has been documented in numerous security assessments and represents a fundamental failure in input validation and parameter handling within the CMS framework.
The technical nature of this vulnerability stems from improper sanitization of user-supplied input parameters within the PHP application. When the jcms_root_path parameter is passed to the includes/functions.php script without adequate validation or filtering, it allows attackers to inject malicious URLs that are then included and executed as PHP code. This type of vulnerability falls under the Common Weakness Enumeration category CWE-88, which specifically addresses improper neutralization of special elements used in an OS command. The vulnerability enables attackers to leverage the web server's file inclusion mechanisms to load and execute remote code, effectively bypassing traditional security controls and potentially granting full administrative access to the compromised system.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to completely compromise the affected web server and potentially escalate privileges within the network. An attacker who successfully exploits this vulnerability can upload malicious files, modify existing content, steal sensitive data, or establish persistent backdoors within the system. This vulnerability directly aligns with ATT&CK technique T1505.003, which describes the use of web shell deployment for maintaining access to compromised systems. The implications are particularly severe for CMS environments where the web server has elevated privileges and can access sensitive files and databases, making the attack surface significantly larger than typical web application vulnerabilities.
Mitigation strategies for CVE-2006-6635 should focus on immediate patching of the affected JumbaCMS version, as the vulnerability affects a specific version that is likely no longer supported or maintained. Organizations should implement input validation controls that sanitize all user-supplied parameters, particularly those used in file inclusion operations. The recommended approach includes disabling remote file inclusion features in PHP configuration, implementing strict parameter validation, and using allowlists for acceptable file paths. Additionally, network segmentation and web application firewalls should be deployed to monitor and block suspicious requests containing potentially malicious URLs. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other applications and ensure that proper security controls are in place to prevent similar remote file inclusion vulnerabilities from being exploited in the future.