CVE-2006-6384 in abitwhizzy
Summary
by MITRE
Absolute path traversal vulnerability in abitwhizzy.php before 20061204 allows remote attackers to read arbitrary files via an absolute pathname in the Filename text window (f parameter), a variant of CVE-2006-6084.
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Analysis
by VulDB Data Team • 10/01/2017
The CVE-2006-6384 vulnerability represents a critical absolute path traversal flaw discovered in the abitwhizzy.php web application before version 20061204. This vulnerability falls under the broader category of path traversal attacks that have been consistently identified as one of the most dangerous web application security flaws. The flaw specifically affects the handling of user-supplied input in the Filename text window parameter known as 'f', allowing malicious actors to manipulate file access requests. This issue is categorized as a variant of CVE-2006-6084, indicating a similar attack vector that leverages absolute path manipulation for unauthorized file access. The vulnerability exists within the file handling mechanisms of the web application, where input validation fails to properly sanitize or restrict user-provided file paths, creating an opportunity for attackers to bypass normal file access controls.
The technical implementation of this vulnerability exploits the lack of proper input validation and sanitization in the abitwhizzy.php script. When users provide file paths through the 'f' parameter, the application processes these inputs without adequate restrictions or canonicalization checks. This allows attackers to submit absolute file paths that point to system files outside the intended web root directory. The vulnerability specifically targets the Filename text window where users can specify file names or paths, enabling remote attackers to navigate the file system beyond the designated boundaries. The flaw essentially permits arbitrary file reading capabilities, where malicious users can access sensitive system files, configuration data, or other restricted resources that should not be publicly accessible through the web interface. This type of vulnerability is classified under CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of CVE-2006-6384 is severe and multifaceted, as it provides attackers with the capability to read arbitrary files on the affected system. This could potentially expose sensitive information including database credentials, configuration files, source code, or other confidential data stored on the server. The vulnerability enables attackers to access system files that may contain authentication details, application logic, or other critical components that could be exploited for further compromise. In a real-world scenario, this could lead to complete system compromise, data theft, or the ability to escalate privileges within the affected environment. The remote nature of the attack means that exploitation does not require local system access, making it particularly dangerous for web applications that are publicly accessible. The vulnerability could also facilitate information gathering for more sophisticated attacks, as attackers might discover system configurations, file structures, or other intelligence that could be used in subsequent phases of an attack lifecycle.
Mitigation strategies for this vulnerability focus on implementing proper input validation and sanitization mechanisms within the abitwhizzy.php application. The most effective approach involves restricting user input to a predefined set of allowed files or directories, implementing proper path canonicalization to prevent directory traversal sequences, and ensuring that all file access operations occur within designated safe boundaries. Organizations should implement strict input validation that rejects absolute paths and validates all file access requests against a whitelist of permitted files or directories. The solution should include proper parameter sanitization to remove or escape potentially dangerous characters and sequences that could be used to manipulate file paths. Additionally, the application should be configured to run with minimal required privileges and should implement proper access controls to limit what files can be accessed through the web interface. This vulnerability demonstrates the importance of following secure coding practices and implementing defense-in-depth strategies that include input validation, access controls, and proper error handling to prevent unauthorized file access and system compromise. The remediation process should involve updating the affected application to a patched version that properly validates and sanitizes file path inputs, and implementing comprehensive security testing to identify similar vulnerabilities in other components of the web application stack.