CVE-2008-6335 in Online Keyword Research Tool
Summary
by MITRE
Directory traversal vulnerability in download.php in eMetrix Online Keyword Research Tool allows remote attackers to read arbitrary files via a .. (dot dot) in the filename parameter.
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Analysis
by VulDB Data Team • 11/20/2024
The CVE-2008-6335 vulnerability represents a critical directory traversal flaw in the eMetrix Online Keyword Research Tool's download.php component. This vulnerability arises from insufficient input validation where the filename parameter fails to properly sanitize user-supplied data containing directory traversal sequences. Attackers can exploit this weakness by crafting malicious requests that include .. (dot dot) sequences in the filename parameter, enabling them to navigate outside the intended download directory and access arbitrary files on the server filesystem. The vulnerability directly maps to CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. Such flaws typically occur when applications fail to adequately validate or sanitize file paths before processing user input, creating opportunities for attackers to manipulate file access patterns.
The operational impact of this vulnerability extends beyond simple file disclosure, as it can potentially lead to complete system compromise. Remote attackers can leverage this weakness to access sensitive configuration files, database credentials, application source code, and other confidential data stored on the server. The attack vector is particularly dangerous because it requires no authentication and can be executed through standard web browser interactions. This vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachment) as attackers can use this flaw to discover system files and potentially deliver malicious payloads. The implications are severe for any organization relying on the eMetrix platform, as successful exploitation could result in data breaches, system compromise, and regulatory compliance violations.
Mitigation strategies for CVE-2008-6335 must address both immediate remediation and long-term architectural improvements. Organizations should implement strict input validation and sanitization for all file path parameters, ensuring that directory traversal sequences are either rejected or properly resolved within the intended directory scope. The most effective approach involves implementing a whitelist-based validation system that only permits specific, predefined file paths or patterns. Additionally, the application should employ proper file access controls and ensure that the web server operates with minimal privileges. Security headers and web application firewalls can provide additional layers of protection, while regular security audits and code reviews should be conducted to identify similar vulnerabilities. The remediation process should also include updating the eMetrix platform to versions that address this specific vulnerability, as the original software may have additional unpatched security flaws. Organizations should implement automated monitoring for suspicious file access patterns and establish incident response procedures to quickly address potential exploitation attempts.