CVE-2007-2078 in Weblog
Summary
by MITRE
** DISPUTED ** PHP remote file inclusion vulnerability in index.php in Maian Weblog 3.1 allows remote attackers to execute arbitrary PHP code via a URL in the path_to_folder parameter. NOTE: this issue was disputed by a third party researcher, since the path_to_folder variable is initialized before use.
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Analysis
by VulDB Data Team • 08/07/2024
The vulnerability identified as CVE-2007-2078 pertains to a remote file inclusion flaw discovered in Maian Weblog version 3.1, specifically within the index.php script. This type of vulnerability falls under the broader category of insecure direct object references and represents a critical security weakness that could potentially allow attackers to execute arbitrary code on the target system. The flaw manifests when the application fails to properly validate or sanitize user-supplied input parameters, creating an avenue for malicious actors to inject and execute unauthorized code.
The technical implementation of this vulnerability occurs through the path_to_folder parameter within the index.php file, which serves as an entry point for remote code execution. When an attacker manipulates this parameter with a malicious URL, the application processes the input without adequate validation, potentially leading to the inclusion of remote files that contain malicious PHP code. This vulnerability directly corresponds to CWE-88, which describes improper neutralization of special elements used in an expression, and CWE-94, which addresses the execution of arbitrary code. The attack vector leverages the principle of insecure input handling, where user-provided data is directly incorporated into file inclusion operations without proper sanitization.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to gain unauthorized access to the web server hosting the vulnerable application. An attacker could leverage this vulnerability to upload and execute malicious scripts, potentially leading to complete system compromise, data exfiltration, or the establishment of persistent backdoors. The remote nature of the vulnerability means that attackers do not require physical access to the system, making it particularly dangerous for web applications exposed to the internet. From an attack framework perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1190 category for exploitation of remote services and T1059 for command and scripting interpreter execution.
Despite the initial classification of this vulnerability, a third-party researcher disputed its validity, arguing that the path_to_folder variable is initialized before use, suggesting that the vulnerability may not exist as originally described. This dispute highlights the importance of thorough verification in vulnerability assessment and the potential for misinterpretation in security research. The disputed nature of this CVE underscores the necessity for comprehensive testing and validation before accepting vulnerability reports. Organizations should remain vigilant about such disputed vulnerabilities and conduct their own independent assessments to determine actual risk exposure, particularly when relying on third-party security advisories for their remediation strategies. Proper input validation and parameter sanitization practices should be implemented regardless of the disputed status, as these measures provide defense-in-depth against similar classes of vulnerabilities that may exist in the application's codebase.