CVE-2007-6213 in WebED
Summary
by MITRE
Multiple directory traversal vulnerabilities in mod/chat/index.php in WebED 0.0.9 allow remote attackers to read arbitrary files via a .. (dot dot) in the (1) Root and (2) Path parameters.
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Analysis
by VulDB Data Team • 10/12/2024
The vulnerability identified as CVE-2007-6213 represents a critical directory traversal flaw within the WebED 0.0.9 web application, specifically affecting the mod/chat/index.php component. This issue stems from insufficient input validation mechanisms that fail to properly sanitize user-supplied parameters, creating an avenue for malicious actors to access unauthorized files on the underlying file system. The vulnerability manifests through two distinct attack vectors, both leveraging the .. (dot dot) sequence within the Root and Path parameters to manipulate file access paths.
The technical exploitation of this vulnerability occurs when an attacker submits crafted input containing directory traversal sequences to the vulnerable parameters in the mod/chat/index.php script. The application processes these inputs without adequate sanitization or validation, allowing the .. sequences to navigate upward through the directory structure and access files outside the intended scope. This flaw directly maps to CWE-22, which defines improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability enables attackers to read arbitrary files from the server's file system, potentially exposing sensitive information such as configuration files, database credentials, or other confidential data stored on the same server.
The operational impact of CVE-2007-6213 extends beyond simple information disclosure, as it provides attackers with the capability to potentially escalate privileges or execute further malicious activities within the compromised environment. Attackers could leverage this vulnerability to access system configuration files, application source code, or database connection strings that could serve as launching points for additional attacks. The vulnerability's remote nature means that exploitation can occur without requiring local system access or authentication, making it particularly dangerous for web applications that are publicly accessible. This type of vulnerability aligns with ATT&CK technique T1083, which focuses on discovering system information through directory listing and file enumeration techniques.
Mitigation strategies for this vulnerability should prioritize immediate patching of the affected WebED application to the latest secure version that addresses the directory traversal flaw. Organizations should implement robust input validation mechanisms that filter or reject directory traversal sequences in all user-supplied parameters. Additionally, the principle of least privilege should be enforced by configuring the web application to operate with minimal required file system permissions, preventing access to sensitive system files even if traversal attacks succeed. Network-level protections such as web application firewalls can provide additional defense-in-depth measures by monitoring and blocking suspicious directory traversal patterns in incoming requests. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application stack, ensuring comprehensive protection against path traversal attacks and maintaining compliance with security standards such as those outlined in the OWASP Top Ten and NIST cybersecurity guidelines.