CVE-2023-6592 in FastDup Plugin
Summary
by MITRE • 01/16/2024
The FastDup WordPress plugin before 2.2 does not prevent directory listing in sensitive directories containing export files.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 02/06/2024
The vulnerability identified as CVE-2023-6592 affects the FastDup WordPress plugin version 2.1 and earlier, representing a critical security flaw that exposes sensitive data through improper directory access controls. This issue stems from the plugin's failure to implement adequate restrictions on directory listing operations within folders that contain exported data files. The vulnerability creates an information disclosure risk where unauthorized users can potentially access and enumerate files in directories that should remain protected from public view. Directory listing vulnerabilities typically occur when web servers are configured to display directory contents rather than presenting a proper error page or access denied message when directory access is restricted.
The technical implementation flaw manifests in the plugin's handling of export functionality where temporary or permanent export files are stored in directories that lack proper access controls. These directories often contain sensitive information such as user data, system configurations, or other potentially confidential exports that should only be accessible to authorized administrators. The vulnerability is particularly concerning because it allows for automated enumeration of files through directory listing, which can be exploited by attackers to discover and potentially download sensitive data. This type of flaw falls under the CWE-548 category of Information Exposure Through Directory Listing, which specifically addresses the exposure of directory contents that may contain sensitive information.
The operational impact of this vulnerability extends beyond simple information disclosure as it creates multiple attack vectors for malicious actors. An attacker who discovers the directory structure can potentially access multiple export files, each containing different types of sensitive data that could be used for further attacks including credential harvesting, system reconnaissance, or social engineering. The exposure of export files may reveal user credentials, database backups, configuration files, or other system artifacts that could compromise the entire WordPress installation. This vulnerability directly aligns with ATT&CK technique T1213.002 which involves accessing data through directory listing, and represents a significant risk to organizations that rely on WordPress plugins for data management and export operations.
Mitigation strategies for CVE-2023-6592 should prioritize immediate plugin updates to version 2.2 or later where the directory listing prevention has been implemented. Organizations should also implement additional security measures including restricting directory access through web server configurations, ensuring that sensitive directories are not accessible via standard web requests, and implementing proper authentication checks for any directory that contains export files. Network-level protections such as web application firewalls can help detect and block directory listing attempts, while regular security audits should verify that no sensitive files are exposed through directory enumeration. The vulnerability underscores the importance of proper input validation and access control implementation in web applications, particularly for plugins that handle sensitive data operations, and demonstrates the necessity of following security best practices such as those outlined in the OWASP Top Ten and NIST Cybersecurity Framework for protecting web applications from information disclosure attacks.