CVE-2007-1985 in phpexplorator
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in phpexplorator.php in phpexplorator 2.0 allow remote attackers to execute arbitrary PHP code via a URL in the (1) cmd or (2) lang_path parameter.
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Analysis
by VulDB Data Team • 08/28/2018
The vulnerability identified as CVE-2007-1985 represents a critical remote file inclusion flaw in phpexplorator version 2.0 that exposes systems to arbitrary code execution. This vulnerability resides within the phpexplorator.php script and specifically targets two parameter inputs named cmd and lang_path. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly restrict user-supplied data from being directly incorporated into file inclusion operations. Attackers can exploit this weakness by crafting malicious URLs containing PHP code within these parameters, enabling them to execute arbitrary commands on the target system. The vulnerability operates under the classification of CWE-98, which describes improper input validation leading to remote file inclusion attacks, and aligns with ATT&CK technique T1190 for exploitation of remote services through file inclusion vulnerabilities.
The technical implementation of this vulnerability allows attackers to manipulate the application's file inclusion behavior by injecting malicious URLs into the targeted parameters. When phpexplorator processes these parameters, it fails to validate or sanitize the input before using it in file inclusion operations, creating a direct pathway for code execution. The cmd parameter likely controls command execution functionality while the lang_path parameter handles language file inclusion, both presenting opportunities for attackers to inject malicious payloads. This vulnerability demonstrates a classic lack of proper input filtering and validation that violates fundamental security principles for preventing code injection attacks. The flaw essentially allows attackers to bypass normal application boundaries and execute arbitrary PHP code with the privileges of the web server process.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. Once exploited, attackers can gain persistent access to the affected server, potentially leading to data breaches, system infiltration, and further lateral movement within network environments. The remote nature of the vulnerability means that attackers can exploit it from anywhere on the internet without requiring local access or credentials. This makes the vulnerability particularly dangerous as it can be exploited by automated scanning tools and botnets. The vulnerability also represents a significant risk to web application security posture, as it allows for complete server compromise through a single exploitable parameter, making it a prime target for automated exploitation campaigns.
Mitigation strategies for CVE-2007-1985 should focus on immediate input validation and sanitization implementation. Organizations must ensure that all user-supplied parameters undergo strict validation before being processed in file inclusion operations. The recommended approach involves implementing whitelisting mechanisms that only allow predefined, safe values for these parameters rather than accepting arbitrary input. Additionally, disabling remote file inclusion features in PHP configuration and implementing proper input filtering techniques such as using allow_url_include = Off in php.ini settings can prevent exploitation. Security patches should be applied immediately to update phpexplorator to versions that address this vulnerability, and network segmentation should be implemented to limit potential attack surfaces. Regular security assessments and input validation testing should be conducted to identify similar vulnerabilities in other applications, with adherence to secure coding practices that prevent similar issues from occurring in future development cycles.