CVE-2007-6139 in ToolBox
Summary
by MITRE
PHP remote file inclusion vulnerability in index.php in Mp3 ToolBox 1.0 beta 5 allows remote attackers to execute arbitrary PHP code via a URL in the skin_file parameter.
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Analysis
by VulDB Data Team • 10/11/2024
The vulnerability identified as CVE-2007-6139 represents a critical remote file inclusion flaw in the Mp3 ToolBox 1.0 beta 5 web application. This vulnerability exists within the index.php script where the application fails to properly validate user input before incorporating it into file inclusion operations. The specific parameter affected is skin_file which accepts URL values that are directly processed without adequate sanitization or validation mechanisms. This flaw falls under the category of insecure direct object references and improper input validation, creating a pathway for malicious actors to inject and execute arbitrary PHP code on the target system.
The technical implementation of this vulnerability exploits the lack of proper input validation within the Mp3 ToolBox application. When a user provides a URL value through the skin_file parameter, the application treats this input as a legitimate file path and attempts to include it in the execution flow. This behavior demonstrates a classic remote file inclusion vulnerability where attacker-controlled input is used to determine which files should be included and executed. The vulnerability is particularly dangerous because it allows remote attackers to execute arbitrary code on the server, potentially leading to complete system compromise. This type of vulnerability is categorized under CWE-88 as improper neutralization of argument delimiters in a command or injection context, and aligns with ATT&CK technique T1190 for exploitation of remote services.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to gain full control over the affected web server. An attacker could leverage this vulnerability to upload malicious files, establish backdoors, access sensitive data, or use the compromised system as a launch point for further attacks within the network. The vulnerability affects the availability, integrity, and confidentiality of the web application and underlying system. Additionally, the presence of this flaw in a beta version suggests potential security gaps in the development lifecycle, indicating inadequate security testing and code review processes. The attack vector requires minimal privileges as the vulnerability can be exploited through simple HTTP requests, making it particularly attractive to threat actors seeking automated exploitation.
Mitigation strategies for this vulnerability should focus on immediate input validation and sanitization measures. The primary fix involves implementing strict validation of the skin_file parameter to ensure it only accepts pre-defined, safe values or properly encoded URLs from trusted sources. Applications should employ allowlists of acceptable file paths rather than accepting arbitrary input. Additionally, the use of secure coding practices such as input sanitization, output encoding, and proper error handling should be implemented. Organizations should also consider implementing web application firewalls to detect and block malicious requests targeting this vulnerability. The vulnerability highlights the importance of following secure coding guidelines and conducting thorough security testing during the development lifecycle. Regular security updates and patches should be applied immediately upon availability, and the application should be configured to disable remote file inclusion features where possible. This vulnerability demonstrates the critical need for proper input validation and the principle of least privilege in web application security.