CVE-2009-4683 in Good-Bad Vote
Summary
by MITRE
Directory traversal vulnerability in vote.php in Good/Bad Vote allows remote attackers to include and execute arbitrary local files via directory traversal sequences in the id parameter in a dovote action. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 05/02/2026
The vulnerability identified as CVE-2009-4683 represents a critical directory traversal flaw within the vote.php script of the Good/Bad Vote application. This security weakness exists in the handling of user input parameters, specifically the id parameter used during the dovote action. The vulnerability allows malicious actors to manipulate the application's file inclusion mechanisms by exploiting improper input validation and sanitization techniques. Attackers can leverage this flaw to access arbitrary local files on the server by crafting malicious directory traversal sequences such as ../ or ..\ in the id parameter. The vulnerability directly enables remote code execution capabilities when combined with appropriate file inclusion vectors, making it particularly dangerous for web applications that lack proper access controls and input validation.
The technical implementation of this vulnerability stems from the application's failure to properly sanitize and validate user-supplied input before processing file inclusion requests. When the vote.php script processes the id parameter during the dovote action, it does not adequately filter or validate the input to prevent directory traversal sequences from being interpreted as legitimate file paths. This lack of proper input validation creates a path traversal condition that allows attackers to navigate the file system beyond the intended directory boundaries. The vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw essentially permits an attacker to bypass normal file access controls and potentially execute arbitrary code or access sensitive system files that should remain protected.
The operational impact of this vulnerability extends beyond simple file access, as it can enable complete system compromise when attackers successfully exploit the directory traversal mechanism. Remote attackers can leverage this vulnerability to read sensitive configuration files, database credentials, application source code, and other confidential information stored on the server. The potential for remote code execution through this flaw means that attackers could gain full control over the affected web server, leading to data breaches, service disruption, and potential lateral movement within network environments. This vulnerability particularly affects web applications that allow user input to influence file operations, making it a significant concern for content management systems, voting platforms, and any application that processes user-supplied data for file operations. The attack vector requires minimal sophistication and can be automated, making it attractive to both skilled and less experienced attackers.
Mitigation strategies for CVE-2009-4683 should focus on implementing robust input validation and sanitization mechanisms to prevent directory traversal sequences from being processed as legitimate file paths. Organizations should immediately apply vendor patches or updates if available, as the vulnerability affects the core file inclusion functionality of the Good/Bad Vote application. The implementation of proper parameter validation, including the removal or encoding of special characters such as .., \, and / from user input, forms the primary defense against this attack vector. Additionally, restricting file access permissions and implementing least privilege principles for web server processes can limit the damage potential of successful exploitation attempts. Security monitoring should include detection of suspicious directory traversal patterns in web server logs, and network-based intrusion detection systems should be configured to identify and block malicious requests containing traversal sequences. This vulnerability demonstrates the importance of following secure coding practices and adhering to the principle of input validation as outlined in various security frameworks including the OWASP Top Ten and NIST cybersecurity guidelines. The attack pattern aligns with ATT&CK technique T1059.007 for command and script injection, where attackers leverage file inclusion vulnerabilities to execute arbitrary code on compromised systems.