CVE-2007-1104 in Php Mip
Summary
by MITRE
PHP remote file inclusion vulnerability in top.php in PHP Module Implementation (PHP-MIP) 0.1 allows remote attackers to execute arbitrary PHP code via a URL in the laypath parameter.
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Analysis
by VulDB Data Team • 08/25/2024
The vulnerability identified as CVE-2007-1104 represents a critical remote file inclusion flaw within the PHP Module Implementation (PHP-MIP) version 0.1, specifically affecting the top.php script. This vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately restrict user-supplied data from being directly incorporated into file inclusion operations. The flaw manifests when the laypath parameter receives a URL value that is subsequently processed by the include or require functions without proper validation, creating an avenue for malicious code execution. The vulnerability is classified under CWE-98 as "Improper Control of Generation of Code ('Code Injection')" and aligns with ATT&CK technique T1190 "Exploit Public-Facing Application" as it enables remote attackers to leverage publicly accessible web applications for code execution.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL and passes it through the laypath parameter in the HTTP request to the vulnerable top.php script. When the application processes this parameter without proper validation, it attempts to include the remote file specified in the URL, effectively executing any PHP code contained within that remote resource. This creates a persistent threat vector where attackers can inject malicious code from remote servers, potentially gaining full control over the affected web server or application. The vulnerability demonstrates a classic insecure direct object reference pattern where user input directly influences file system operations, allowing attackers to bypass normal access controls and execute arbitrary code with the privileges of the web application.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to establish persistent access to the compromised system, exfiltrate sensitive data, or deploy additional malware. The vulnerability affects the confidentiality, integrity, and availability of the affected web application, potentially leading to complete system compromise. Organizations utilizing PHP-MIP 0.1 are particularly at risk since this vulnerability enables attackers to perform remote code execution without requiring authentication or specific local access. The threat landscape surrounding this vulnerability aligns with ATT&CK tactic T1059 "Command and Scripting Interpreter" as attackers can execute arbitrary commands through the included PHP code, and T1041 "Exfiltration Over C2 Channel" as the malicious code can establish communication with attacker-controlled servers.
Mitigation strategies for this vulnerability must address the fundamental flaw in input handling and file inclusion mechanisms. The primary remediation involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Organizations should employ allowlist validation techniques to restrict the laypath parameter to only accept predetermined, safe values rather than allowing arbitrary URLs. Additionally, disabling remote file inclusion capabilities entirely through php.ini configuration by setting allow_url_include to off provides a secondary layer of protection. The implementation of proper input validation aligns with OWASP Top 10 2017 category A03:2017 "Injection" and follows the principle of least privilege by ensuring that file inclusion operations only access expected local files. Regular security audits and code reviews should specifically target file inclusion patterns to identify similar vulnerabilities, while application firewalls and intrusion detection systems can help detect and prevent exploitation attempts. The vulnerability also underscores the importance of keeping PHP applications updated and following secure coding practices that prevent direct user input from influencing critical system operations.