CVE-2006-7032 in FlashBB
Summary
by MITRE
PHP remote file inclusion vulnerability in phpbb/getmsg.php in FlashBB 1.1.5 and earlier allows remote attackers to execute arbitrary code via a URL in the phpbb_root_path parameter.
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Analysis
by VulDB Data Team • 07/03/2024
The vulnerability identified as CVE-2006-7032 represents a critical remote file inclusion flaw within the FlashBB 1.1.5 software ecosystem, specifically affecting the phpbb/getmsg.php component. This issue stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied data before incorporating it into file system operations. The vulnerability manifests when the phpbb_root_path parameter receives a URL value that triggers remote code execution through improper parameter handling.
This security weakness falls under the category of CWE-98, which specifically addresses "Include File Injection" or "Remote File Inclusion" vulnerabilities in web applications. The flaw allows malicious actors to inject arbitrary URLs into the application's file inclusion mechanisms, potentially enabling them to execute malicious code on the target server. The vulnerability is particularly dangerous because it operates at the application level and can be exploited without requiring authentication or prior access to the system. The attack vector leverages the inherent trust placed by the application in user-provided parameters, creating a pathway for remote code execution through the inclusion of malicious remote files.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to establish persistent access to the affected system. Through successful exploitation, adversaries can upload additional malicious payloads, create backdoors, or even escalate privileges within the application environment. The vulnerability affects not only the immediate execution capabilities but also compromises the integrity and confidentiality of data processed by the vulnerable FlashBB installation. Organizations running affected versions face significant risk of data breaches, system compromise, and potential lateral movement within their network infrastructure.
Mitigation strategies for CVE-2006-7032 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary recommendation involves upgrading to FlashBB versions that have patched this vulnerability, as the original software version lacks proper input validation mechanisms. Additionally, implementing strict input validation controls that sanitize all user-supplied parameters before processing them in file inclusion operations is essential. Security measures should include disabling remote file inclusion features, implementing whitelisting for file paths, and employing proper parameter validation techniques that reject suspicious URL patterns. Organizations should also consider implementing web application firewalls to detect and block exploitation attempts targeting this specific vulnerability class, aligning with ATT&CK technique T1190 for exploitation of remote services and T1059 for command and control through remote code execution. The vulnerability serves as a prime example of why proper input validation and the principle of least privilege should be fundamental components of all web application security architectures, particularly in systems handling user-provided data through file inclusion mechanisms.