CVE-2009-2444 in ADbNewsSender
Summary
by MITRE
Directory traversal vulnerability in maillinglist/setup/step1.php.inc in ADbNewsSender before 1.5.6, and 2.0 before RC2, allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the path_to_lang parameter to setup/index.php.
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Analysis
by VulDB Data Team • 11/18/2018
The vulnerability identified as CVE-2009-2444 represents a critical directory traversal flaw affecting ADbNewsSender versions prior to 1.5.6 and 2.0 RC2. This security weakness resides within the mailingslist/setup/step1.php.inc component of the application, where improper input validation allows malicious actors to manipulate file inclusion mechanisms through crafted path parameters. The vulnerability specifically manifests when the path_to_lang parameter in setup/index.php is manipulated using directory traversal sequences such as .. (dot dot) notation, enabling attackers to access arbitrary local files on the server filesystem.
This directory traversal vulnerability falls under the Common Weakness Enumeration category CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw enables an attacker to bypass normal access controls and potentially execute arbitrary code on the target system by leveraging the file inclusion functionality. The attack vector operates by exploiting the lack of proper input sanitization and validation, allowing the application to process user-supplied path information without adequate restrictions on directory navigation sequences.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the capability to execute arbitrary local files on the affected server. This could lead to complete system compromise, especially if the application runs with elevated privileges or if the attacker can access sensitive configuration files, database credentials, or other critical system resources. The vulnerability affects the setup process of ADbNewsSender, making it particularly dangerous during initial deployment phases when administrators might be more focused on configuration rather than security considerations.
Security mitigations for this vulnerability involve implementing strict input validation and sanitization measures, particularly for file path parameters used in file inclusion operations. Organizations should ensure that all user-supplied input is properly validated against a whitelist of acceptable values, and that directory traversal sequences are explicitly rejected. The recommended remediation includes updating to ADbNewsSender versions 1.5.6 or 2.0 RC2 and later, which contain the necessary patches to address the directory traversal vulnerability. Additionally, implementing proper access controls and privilege separation can limit the potential impact of successful exploitation attempts, aligning with the principle of least privilege as outlined in cybersecurity best practices and defense-in-depth strategies.
The attack scenario typically involves an attacker sending a malicious request to setup/index.php with a crafted path_to_lang parameter containing directory traversal sequences. This approach leverages the application's trust in user input and failure to properly validate or sanitize file paths before processing. The vulnerability demonstrates how insufficient input validation can create pathways for attackers to escalate privileges and access unauthorized resources, making it a prime example of how basic security controls can prevent widespread exploitation of file inclusion vulnerabilities. Organizations should implement comprehensive security testing including penetration testing and code reviews to identify similar path traversal vulnerabilities in their applications, following established frameworks such as the ATT&CK matrix for adversary behavior modeling and defensive strategy development.