CVE-2010-1977 in Com Jwhmcs
Summary
by MITRE
Directory traversal vulnerability in the J!WHMCS Integrator (com_jwhmcs) component 1.5.0 for Joomla! allows remote attackers to read arbitrary files via a .. (dot dot) in the controller parameter to index.php.
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Analysis
by VulDB Data Team • 08/02/2025
The CVE-2010-1977 vulnerability represents a critical directory traversal flaw within the J platforms. This vulnerability resides in the component's handling of user input through the controller parameter in the index.php file, creating an exploitable condition that enables remote attackers to access arbitrary files on the server. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly restrict directory navigation sequences, allowing malicious actors to manipulate file access paths through crafted requests containing directory traversal sequences.
The technical implementation of this vulnerability leverages the standard .. (dot dot) sequence commonly used to navigate up directory levels in file systems. When the J!WHMCS component processes the controller parameter without adequate sanitization, it fails to validate or filter out these traversal sequences, permitting attackers to bypass normal file access controls. This allows unauthorized access to sensitive files including configuration files, database credentials, user information, and potentially system files that should remain protected from external access. The vulnerability operates at the application layer and can be exploited through simple HTTP requests without requiring authentication or specialized tools.
The operational impact of CVE-2010-1977 extends beyond simple information disclosure, as it can lead to complete system compromise when combined with other vulnerabilities or attack vectors. Attackers can leverage this flaw to access critical system components including database connection files that may contain administrative credentials, configuration files that reveal system architecture details, and potentially sensitive business data stored within the WHMCS integration. The vulnerability directly violates security principles outlined in CWE-22, which categorizes directory traversal attacks as a fundamental weakness in input validation. This weakness enables attackers to access files outside the intended directory structure, potentially leading to privilege escalation, data theft, and system infiltration.
Mitigation strategies for this vulnerability require immediate patching of the affected J!WHMCS component to version 1.5.1 or later, which includes proper input validation and sanitization mechanisms. System administrators should implement web application firewalls with rules specifically designed to detect and block directory traversal attempts, particularly those containing .. sequences in parameters. Additionally, the principle of least privilege should be enforced by restricting file system access permissions for the web application and ensuring that sensitive configuration files are stored outside the web root directory. Organizations should conduct comprehensive security assessments to identify other potentially vulnerable components and implement proper input validation across all application parameters, aligning with ATT&CK technique T1213 for credential access through file system traversal. Regular security monitoring and log analysis should be implemented to detect suspicious file access patterns that may indicate exploitation attempts. The vulnerability demonstrates the critical importance of input validation and proper access control implementation in web applications, as outlined in industry standards for secure coding practices and vulnerability remediation.