CVE-2006-4207 in Discloser
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Bob Jewell Discloser 0.0.4 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the fileloc parameter to (1) content/content.php or (2) /inc/indexhead.php.
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Analysis
by VulDB Data Team • 07/14/2024
The vulnerability identified as CVE-2006-4207 represents a critical remote file inclusion flaw affecting Bob Jewell Discloser version 0.0.4 and earlier. This vulnerability resides within the application's handling of user-supplied input in the fileloc parameter, which is processed in two primary locations: content/content.php and /inc/indexhead.php. The flaw enables malicious actors to inject arbitrary PHP code by manipulating the fileloc parameter with a remote URL, thereby bypassing the intended local file access controls. This type of vulnerability falls under the category of CWE-88, which describes improper neutralization of special elements used in an OS command, and more specifically aligns with CWE-94, representing insufficient control of generation of code, or Code Injection.
The technical exploitation of this vulnerability occurs when the application fails to properly validate or sanitize the fileloc parameter before incorporating it into file inclusion operations. Attackers can craft malicious URLs that, when passed through the vulnerable parameters, cause the application to include and execute remote PHP scripts. This creates a pathway for arbitrary code execution on the target server, potentially allowing attackers to gain full control over the affected system. The vulnerability demonstrates a classic lack of input validation and proper sanitization, which are fundamental security practices that should prevent user input from being directly interpreted as executable code. The flaw is particularly dangerous because it operates at the application level and can be exploited without requiring authentication or prior access to the system.
From an operational standpoint, this vulnerability presents significant risk to organizations deploying affected versions of Bob Jewell Discloser. The remote execution capability allows attackers to perform a wide range of malicious activities including data theft, system compromise, and establishment of persistent backdoors. The impact extends beyond immediate code execution to potential lateral movement within networks, as compromised systems can serve as launch points for further attacks. This vulnerability directly maps to several ATT&CK techniques including T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter, demonstrating how attackers can leverage such flaws to establish persistent access and execute commands on compromised systems. The lack of proper input validation creates a fundamental security weakness that can be easily exploited by automated scanning tools, making the vulnerability particularly attractive to threat actors.
Mitigation strategies for CVE-2006-4207 should prioritize immediate patching of the affected application to version 0.0.5 or later, which contains the necessary fixes for the remote file inclusion vulnerability. Organizations should implement input validation and sanitization measures to prevent user-supplied parameters from being used in file inclusion operations without proper verification. The principle of least privilege should be enforced by restricting file inclusion capabilities to only trusted local paths and implementing proper access controls. Network-level defenses including web application firewalls and intrusion detection systems can provide additional protection by monitoring for suspicious URL patterns and blocking known malicious payloads. Security configurations should include disabling remote file inclusion features and implementing strict input validation for all user-supplied parameters. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other applications and systems, ensuring comprehensive protection against similar remote file inclusion vulnerabilities that may exist within the organization's attack surface.