CVE-2006-4209 in Mailing List Manager
Summary
by MITRE
PHP remote file inclusion vulnerability in install3.php in WEBInsta Mailing List Manager 1.3e allows remote attackers to execute arbitrary PHP code via a URL in the cabsolute_path parameter.
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Analysis
by VulDB Data Team • 07/13/2024
The vulnerability identified as CVE-2006-4209 represents a critical remote file inclusion flaw within the WEBInsta Mailing List Manager version 1.3e software. This security weakness exists in the install3.php script which processes user-supplied input without adequate validation or sanitization. The vulnerability specifically manifests when the cabsolute_path parameter is manipulated to include external URLs, creating an opportunity for malicious actors to inject and execute arbitrary PHP code on the target system. The flaw stems from improper input handling that fails to distinguish between legitimate local paths and potentially malicious remote URLs, effectively allowing attackers to bypass normal execution boundaries and introduce unauthorized code execution capabilities.
This vulnerability directly maps to CWE-88, which describes improper neutralization of special elements used in an SQL command, and more specifically to CWE-94, which covers the execution of arbitrary code. The attack vector operates through the manipulation of the cabsolute_path parameter, where an attacker can craft a malicious URL that gets included and executed by the vulnerable PHP application. The underlying technical flaw lies in the application's failure to implement proper input validation and sanitization mechanisms, allowing untrusted data to flow directly into file inclusion functions such as include() or require() without adequate security checks.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with complete code execution privileges on the affected server. Once exploited, adversaries can upload malicious files, establish backdoors, modify existing functionality, or even gain access to sensitive data stored within the application's database. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access to the target system. This vulnerability also aligns with ATT&CK technique T1190, which covers the exploitation of remote services, and T1059, which describes the execution of commands through various interfaces including PHP code execution.
Mitigation strategies for CVE-2006-4209 should prioritize immediate patching of the affected WEBInsta Mailing List Manager software to the latest available version that addresses this vulnerability. Organizations should implement input validation controls that specifically reject URLs or external references in parameters that are intended for local file operations. The principle of least privilege should be enforced by configuring the web application to operate with minimal necessary permissions and by restricting the web server's ability to include files from arbitrary locations. Additionally, implementing web application firewalls that can detect and block malicious URL patterns in request parameters would provide an additional layer of defense. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other applications, particularly focusing on file inclusion functions and parameter handling mechanisms that could lead to similar remote code execution scenarios.