CVE-2008-7142 in cPanel
Summary
by MITRE
Absolute path traversal vulnerability in the Disk Usage module (frontend/x/diskusage/index.html) in cPanel 11.18.3 allows remote attackers to list arbitrary directories via the showtree parameter.
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Analysis
by VulDB Data Team • 05/12/2025
The CVE-2008-7142 vulnerability represents a critical absolute path traversal flaw within cPanel's Disk Usage module, specifically affecting version 11.18.3. This vulnerability exists in the frontend component at frontend/x/diskusage/index.html and enables remote attackers to enumerate arbitrary directories on the target system through manipulation of the showtree parameter. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly restrict user-supplied directory paths, allowing malicious actors to bypass normal access controls and traverse the file system hierarchy. Such path traversal vulnerabilities are particularly dangerous because they can expose sensitive system information and potentially lead to further exploitation opportunities.
The technical implementation of this vulnerability leverages the showtree parameter to construct directory listing requests without adequate validation of the input values. When a user submits a crafted showtree value, the application processes this input directly without proper sanitization or path normalization, enabling attackers to specify absolute paths or manipulate directory traversal sequences. This weakness falls under the CWE-22 category of Path Traversal, which is classified as a high-severity vulnerability in the Common Weakness Enumeration taxonomy. The vulnerability can be exploited through simple HTTP requests that manipulate the parameter to navigate to arbitrary directories, potentially exposing system files, configuration data, or other sensitive information stored outside the intended web root.
The operational impact of this vulnerability extends beyond mere information disclosure, as it can provide attackers with comprehensive knowledge of the target system's directory structure and potentially reveal sensitive files that might contain credentials, configuration details, or other valuable data. Attackers can leverage this information to plan more sophisticated attacks, including privilege escalation attempts or exploitation of other vulnerabilities within the system. The remote nature of this vulnerability means that attackers do not require local access or credentials to exploit it, making it particularly dangerous for web-based applications. This type of vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1068 (Exploitation for Privilege Escalation), as it enables reconnaissance activities and potential privilege escalation through information gathering.
Organizations using affected cPanel versions should immediately implement mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file system operations. The recommended approach involves implementing proper path normalization and ensuring that all directory traversal operations are restricted to predefined safe paths within the application's intended scope. Additionally, access controls should be strengthened to limit the ability of remote users to enumerate system directories, and all cPanel installations should be updated to versions that address this vulnerability. Security monitoring should include detection of unusual directory traversal patterns and parameter manipulation attempts, while network segmentation and firewall rules can help limit the exposure of vulnerable components to untrusted networks. The vulnerability demonstrates the critical importance of proper input validation in web applications and serves as a reminder of the need for comprehensive security testing and regular patch management procedures.