CVE-2006-4530 in membrepass
Summary
by MITRE
Direct static code injection vulnerability in include/change.php in membrepass 1.5 allows remote attackers to execute arbitrary PHP code via the aifon parameter, which is injected into include/variable.php.
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Analysis
by VulDB Data Team • 08/03/2018
The vulnerability identified as CVE-2006-4530 represents a critical direct static code injection flaw within the membrepass 1.5 web application. This vulnerability exists in the include/change.php file where user-supplied input from the aifon parameter is directly incorporated into the include/variable.php file without proper sanitization or validation. The flaw allows remote attackers to inject malicious PHP code that gets executed on the target server, creating a severe security risk for any system running this vulnerable version.
The technical implementation of this vulnerability stems from improper input handling and lack of output encoding mechanisms within the application's codebase. When the aifon parameter is processed, the application fails to validate or sanitize the input before including it into the variable.php file, creating a path for arbitrary code execution. This type of vulnerability falls under CWE-94, which specifically addresses the execution of arbitrary code, and more broadly under CWE-74, which deals with improper neutralization of special elements used in a code context. The vulnerability is particularly dangerous because it allows attackers to execute PHP code directly on the web server, potentially leading to complete system compromise.
The operational impact of this vulnerability is severe and multifaceted. Remote attackers can leverage this flaw to execute arbitrary commands on the affected server, potentially gaining unauthorized access to sensitive data, modifying application behavior, or establishing persistent backdoors. The vulnerability enables attackers to perform actions such as reading system files, executing shell commands, and accessing databases that are typically protected by normal application security controls. This creates a significant risk for organizations using membrepass 1.5, as the vulnerability can be exploited without requiring authentication or prior access to the system. The attack surface is particularly broad since the vulnerability is accessible through standard web requests, making it easily exploitable by automated scanning tools and malicious actors.
Mitigation strategies for this vulnerability require immediate action to address the root cause of the code injection flaw. The most effective approach involves implementing proper input validation and sanitization mechanisms to ensure that all user-supplied parameters are thoroughly checked before being processed. This includes implementing strict parameter validation, using whitelisting approaches for acceptable input values, and avoiding direct inclusion of user-controllable variables in server-side code execution contexts. Organizations should also consider implementing proper output encoding, input escaping, and secure coding practices that prevent dynamic code evaluation. From an operational security perspective, this vulnerability aligns with ATT&CK technique T1059.007 for execution through PHP, and the remediation efforts should follow security best practices outlined in OWASP Top 10 and similar industry standards. Additionally, regular security code reviews, automated vulnerability scanning, and maintaining up-to-date application versions are essential preventive measures that should be implemented to protect against similar injection vulnerabilities in the future.