CVE-2007-1601 in Weekly Drawing Contest
Summary
by MITRE
** DISPUTED ** Directory traversal vulnerability in check_vote.php in Weekly Drawing Contest 0.0.1 allows remote attackers to read arbitrary files via a .. (dot dot) in the order parameter. NOTE: another researcher disputes this vulnerability, noting that the order variable is not used in any context that allows opening files.
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Analysis
by VulDB Data Team • 08/07/2024
The vulnerability identified as CVE-2007-1601 pertains to a directory traversal flaw discovered in the check_vote.php script of the Weekly Drawing Contest web application version 0.0.1. This type of vulnerability falls under the category of path traversal attacks where malicious actors can exploit improperly validated input to access files outside the intended directory structure. The specific vector of attack involves the order parameter within the check_vote.php file, which when manipulated with .. (dot dot) sequences could potentially allow unauthorized file access. According to the initial vulnerability report, this flaw would enable remote attackers to read arbitrary files from the server filesystem, presenting a significant security risk that could expose sensitive data, configuration files, or even system binaries.
The technical implementation of this vulnerability demonstrates a classic lack of input validation and sanitization in web applications. When the order parameter is submitted with directory traversal sequences such as ../../etc/passwd, the application fails to properly sanitize this input before using it in file operations. This weakness creates an opportunity for attackers to navigate upward through the directory structure and access files that should remain protected. The vulnerability represents a direct violation of secure coding practices and aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The flaw operates at the application level where user-supplied data is directly incorporated into file system operations without adequate validation or sanitization mechanisms.
However, the vulnerability assessment presents some ambiguity as noted in the official description, since another security researcher has disputed the validity of this particular CVE. The disputed nature stems from the observation that the order variable in question does not appear to be used in any context that actually opens or processes files. This discrepancy highlights the complexity and potential subjectivity involved in vulnerability assessment and classification. The conflicting researcher's analysis suggests that either the vulnerability was incorrectly identified, or the original vulnerability report may have contained misleading information about the actual code paths that could be exploited. This situation demonstrates the importance of thorough verification and independent validation of vulnerability claims within the security community.
The operational impact of this vulnerability, if it were to be validated, would be substantial for any organization running the affected Weekly Drawing Contest application. Remote file access capabilities could enable attackers to retrieve sensitive information including database credentials, application configuration files, user data, or even system-level files that contain critical security information. The implications extend beyond simple data theft to potentially enabling further attacks such as privilege escalation, system compromise, or complete application takeover. Organizations would face significant risks including regulatory compliance violations, data breaches, and reputational damage. The vulnerability would be particularly concerning for web applications handling user data or containing sensitive operational information.
Mitigation strategies for this type of vulnerability would involve implementing proper input validation and sanitization techniques. The most effective approach would be to remove or properly escape any directory traversal sequences from user input before using it in file operations. Developers should employ allow-list validation where only predefined, safe values are accepted for the order parameter rather than accepting arbitrary input. Additionally, implementing proper file access controls and ensuring that applications run with minimal required privileges can significantly reduce the impact of any potential exploitation attempts. The application should also be configured with proper directory restrictions and access controls to prevent unauthorized file access even if input validation fails. These defensive measures align with the principle of least privilege and input validation best practices recommended in various security frameworks and standards including those established by the Center for Internet Security and NIST guidelines. Organizations should also conduct thorough code reviews and penetration testing to identify similar vulnerabilities in their applications and ensure proper security controls are in place to prevent unauthorized file access.