CVE-2007-0581 in EclipseBB
Summary
by MITRE
PHP remote file inclusion vulnerability in functions.php in EclipseBB 0.5.0 Lite allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.
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Analysis
by VulDB Data Team • 08/19/2024
The vulnerability identified as CVE-2007-0581 represents a critical remote file inclusion flaw in EclipseBB version 0.5.0 Lite that enables attackers to execute arbitrary PHP code on affected systems. This vulnerability specifically targets the functions.php script within the application's codebase, where improper input validation allows malicious actors to inject external URLs through the phpbb_root_path parameter. The flaw stems from the application's failure to properly sanitize user-supplied input before incorporating it into file inclusion operations, creating an exploitable path for remote code execution.
This vulnerability maps directly to CWE-88, which describes improper neutralization of special elements used in an expression, and more specifically to CWE-94, which addresses the execution of code in a context that allows for arbitrary code execution. The technical implementation involves the application's use of dynamic file inclusion functions such as include or require without adequate input validation, allowing attackers to manipulate the phpbb_root_path parameter to point to malicious remote resources. When the application processes this parameter, it executes code from the attacker-controlled URL, effectively providing a backdoor for remote command execution.
The operational impact of this vulnerability is severe and multifaceted, as it grants remote attackers complete control over the affected server. Attackers can execute system commands, access sensitive data, modify application behavior, and potentially establish persistent access through the compromised system. The vulnerability affects the confidentiality, integrity, and availability of the targeted web application and underlying infrastructure. From an attacker's perspective, this represents a high-value target within the MITRE ATT&CK framework under the T1059.007 technique for command and script injection, specifically targeting remote code execution capabilities.
The exploitation process typically involves crafting a malicious URL that points to attacker-controlled PHP code, which is then passed through the phpbb_root_path parameter. When the vulnerable application processes this input, it includes and executes the remote PHP file, allowing the attacker to perform arbitrary operations on the system. Organizations should immediately implement mitigations including input validation, parameter sanitization, and the removal of dynamic file inclusion patterns that rely on user input. The most effective remediation involves implementing proper input validation and using allowlists for file paths rather than accepting arbitrary user input for file inclusion operations. Additionally, disabling remote file inclusion capabilities in PHP configuration and implementing web application firewalls can provide additional protection layers against exploitation attempts.