CVE-2006-7136 in PHP Poll Creator
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in PHP Poll Creator (phpPC) 1.04 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the relativer_pfad parameter to (1) poll.php, (2) poll_kommentar.php, and (3) poll_sm.php, different vectors and version than CVE-2005-1755.
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability identified as CVE-2006-7136 represents a critical remote file inclusion flaw affecting PHP Poll Creator version 1.04 and earlier. This security weakness resides in the application's handling of user-supplied input within the relativer_pfad parameter, which is processed across three distinct script files including poll.php, poll_kommentar.php, and poll_sm.php. The vulnerability operates under the broader category of insecure direct object reference issues and falls within the CWE-98 classification for including files without proper validation, making it a prime target for attackers seeking to execute arbitrary code on affected systems.
The technical exploitation of this vulnerability occurs when an attacker supplies a malicious URL as the value for the relativer_pfad parameter in the targeted scripts. This parameter is used to determine the relative path for including additional PHP files, and due to insufficient input validation, attackers can manipulate this parameter to reference external malicious files hosted on remote servers. The flaw demonstrates characteristics consistent with CWE-22 and CWE-434, representing path traversal and insecure file handling vulnerabilities that enable unauthorized code execution. This vulnerability differs from CVE-2005-1755 in both the specific vectors and version affected, indicating a persistent issue within the PHP Poll Creator application family.
From an operational impact perspective, successful exploitation of CVE-2006-7136 allows remote attackers to execute arbitrary PHP code on vulnerable systems, potentially leading to complete system compromise. Attackers can leverage this vulnerability to upload backdoors, establish persistent access, or execute commands on the affected server. The attack surface extends across all three vulnerable scripts, providing multiple entry points for exploitation. According to ATT&CK framework, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1059 (Command and Scripting Interpreter) techniques, as it enables attackers to exploit publicly accessible web applications and execute malicious code within the target environment.
Mitigation strategies for this vulnerability should focus on immediate patching of the PHP Poll Creator application to version 1.05 or later, where the file inclusion vulnerability has been addressed. Organizations should implement input validation measures that sanitize all user-supplied parameters, particularly those used in file inclusion operations. The implementation of a whitelist-based approach for path validation, combined with proper access controls and secure coding practices, can significantly reduce the risk of exploitation. Additionally, network segmentation and web application firewalls can provide additional layers of protection. Security monitoring should be enhanced to detect suspicious file inclusion patterns and anomalous network traffic patterns that may indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other applications within the organization's infrastructure, as this vulnerability type remains prevalent in legacy web applications.