CVE-2006-6416 in PhpLeague
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in PhpLeague - Univert PhpLeague 0.81 allow remote attackers to execute arbitrary PHP code via a URL in the cheminmini parameter to (1) consult/miniseul.php or (2) config.php. NOTE: The provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/10/2018
The vulnerability identified as CVE-2006-6416 represents a critical remote file inclusion flaw affecting PhpLeague version 0.81, specifically targeting the Univert PhpLeague framework. This security weakness stems from improper input validation mechanisms within the application's parameter handling processes, creating an avenue for malicious actors to inject and execute arbitrary PHP code on vulnerable systems. The vulnerability manifests through two distinct attack vectors, both exploiting the cheminmini parameter within the consult/miniseul.php and config.php files, which serve as entry points for remote code execution.
The technical exploitation of this vulnerability occurs when attackers manipulate the cheminmini parameter to reference external URLs containing malicious PHP code. This flaw directly maps to CWE-88, which describes improper neutralization of special elements in input that could be interpreted as command or control instructions. The vulnerability is classified as a remote file inclusion issue because the application fails to properly sanitize user-supplied input before incorporating it into file path operations, allowing attackers to specify arbitrary file locations that can be loaded and executed by the web server. The attack leverages the trust placed in the application's parameter processing logic, where legitimate file inclusion functionality becomes a vector for malicious code delivery.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected web server. Successful exploitation enables malicious actors to execute arbitrary commands, access sensitive data, modify application behavior, and potentially establish persistent access through backdoor installations. The vulnerability affects web applications running on PHP environments where the vulnerable PhpLeague framework is deployed, creating a significant risk for organizations that have not updated their systems or implemented proper input validation measures. This type of vulnerability is particularly dangerous because it can be exploited without requiring authentication, making it an attractive target for automated scanning and exploitation tools.
Mitigation strategies for this vulnerability should focus on immediate input validation and sanitization measures, including the implementation of strict parameter validation for all user-supplied inputs. Organizations should disable the problematic functionality if possible, or implement proper input filtering that prevents URLs from being passed through the cheminmini parameter. The remediation approach aligns with ATT&CK technique T1059.007, which addresses execution through PHP and other scripting languages, requiring defensive measures that prevent malicious code injection. Additionally, the vulnerability demonstrates the importance of following secure coding practices as outlined in OWASP Top Ten, particularly addressing injection flaws and improper input validation. Regular security updates and patch management procedures should be implemented to prevent similar vulnerabilities from being introduced through outdated software components, while network monitoring and intrusion detection systems can help identify exploitation attempts targeting this specific vulnerability pattern.