CVE-2007-2422 in Modules Builder
Summary
by MITRE
** DISPUTED ** Multiple PHP remote file inclusion vulnerabilities in Modules Builder (modbuild) 4.1 for Comdev One Admin allow remote attackers to execute arbitrary PHP code via a URL in the path[docroot] parameter to (1) config-bak.php or (2) config.php. NOTE: CVE disputes this vulnerability because the unmodified scripts set the applicable variable to the empty string; reasonable modified copies would use a fixed pathname string.
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Analysis
by VulDB Data Team • 01/17/2025
The vulnerability identified as CVE-2007-2422 pertains to multiple remote file inclusion flaws discovered in the Modules Builder component version 4.1 for Comdev One Admin. This vulnerability classifies under CWE-88, which describes improper neutralization of special elements used in an expression, specifically in the context of remote file inclusion attacks. The affected scripts config-bak.php and config.php contain insecure parameter handling mechanisms that permit attackers to inject malicious URLs through the path[docroot] parameter, potentially enabling arbitrary code execution on the target system.
The technical flaw manifests in how the application processes user-supplied input without proper validation or sanitization. When an attacker supplies a malicious URL through the path[docroot] parameter, the application fails to properly validate this input before using it in file inclusion operations. This creates an opportunity for attackers to load and execute arbitrary PHP code from remote servers, effectively bypassing the intended security boundaries of the application. The vulnerability is particularly concerning because it allows remote code execution without requiring authentication, making it a critical security risk for systems running the affected software.
From an operational perspective, this vulnerability represents a severe threat to system integrity and confidentiality. Attackers could leverage this flaw to gain unauthorized access to the affected system, potentially leading to complete system compromise. The remote execution capability means that attackers do not need physical access to the system, allowing them to exploit the vulnerability from anywhere on the internet. This vulnerability directly maps to ATT&CK technique T1505.003, which describes server-side include attacks, and T1059.007, which covers scripting through web shells, both of which are common exploitation methods for such remote file inclusion vulnerabilities.
The vulnerability assessment indicates that the original scripts are designed to set the applicable variable to an empty string, which would normally prevent the exploitation. However, the vulnerability exists in modified copies of the software where developers may have introduced fixed pathname strings without proper input validation. This discrepancy between the original and modified versions creates a security gap that attackers can exploit. The disputed nature of this CVE reflects the complexity of determining whether the vulnerability existed in the original software or was introduced through modifications by developers or system administrators.
Security mitigations for this vulnerability should focus on implementing proper input validation and sanitization mechanisms. Organizations should ensure that all user-supplied parameters are validated against a strict whitelist of acceptable values before being processed. The implementation of a secure coding practice approach, including the use of allowlists for file inclusion operations and proper input filtering, would prevent attackers from injecting malicious URLs. Additionally, maintaining up-to-date software versions and implementing network segmentation controls can help reduce the attack surface and limit the potential impact of such vulnerabilities. Regular security audits and code reviews should be conducted to identify and remediate similar insecure coding practices that could lead to remote file inclusion vulnerabilities in other components of the application stack.