CVE-2019-25632: Phpfilemanager Path Traversal Flaw

CVE-2019-25632 Overview

CVE-2019-25632 is a Local File Inclusion (LFI) vulnerability affecting phpFileManager version 1.7.8. This vulnerability allows unauthenticated attackers to read arbitrary files from the server by manipulating the action, fm_current_dir, and filename parameters in GET requests to index.php. Attackers can exploit this flaw to access sensitive system files such as /etc/passwd without any authentication.

Critical Impact

Unauthenticated attackers can read sensitive files from the server, potentially exposing credentials, configuration data, and other confidential information that could be leveraged for further attacks.

Affected Products

• Dulldusk phpFileManager 1.7.8

Discovery Timeline

• 2026-03-24 - CVE CVE-2019-25632 published to NVD
• 2026-03-25 - Last updated in NVD database

Technical Details for CVE-2019-25632

Vulnerability Analysis

This Local File Inclusion vulnerability exists due to improper input validation in phpFileManager's index.php file. The application fails to properly sanitize user-supplied input for the action, fm_current_dir, and filename parameters before using them to construct file paths. This lack of validation allows attackers to traverse the directory structure and include arbitrary files from the local file system.

The vulnerability is classified under CWE-306 (Missing Authentication for Critical Function), indicating that the file access functionality lacks proper authentication checks. This means any remote attacker can exploit the vulnerability without needing valid credentials, significantly increasing the risk of sensitive data exposure.

Root Cause

The root cause of this vulnerability is the absence of proper input sanitization and authentication checks in phpFileManager's file handling functionality. The application directly uses user-controlled parameters to construct file paths without validating that the requested files are within the intended directory scope or that the requester has appropriate permissions.

Attack Vector

An attacker can exploit this vulnerability by sending specially crafted GET requests to the index.php endpoint. By manipulating the action, fm_current_dir, and filename parameters with directory traversal sequences (such as ../), an attacker can escape the web root directory and access arbitrary files on the server.

For example, an attacker could craft a request that sets fm_current_dir to a path containing traversal sequences pointing to system directories, allowing them to read sensitive files like /etc/passwd, configuration files, or application source code. The Exploit-DB #46638 reference provides a documented proof-of-concept for this attack methodology.

Detection Methods for CVE-2019-25632

Indicators of Compromise

• HTTP GET requests to index.php containing directory traversal sequences (../, ..%2f, etc.) in the fm_current_dir or filename parameters
• Access log entries showing attempts to access sensitive system files like /etc/passwd, /etc/shadow, or application configuration files
• Unusual file access patterns originating from the web server process attempting to read files outside the web root

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests containing directory traversal patterns in URL parameters
• Configure IDS/IPS signatures to alert on LFI attack patterns targeting phpFileManager endpoints
• Monitor web server access logs for requests to index.php with suspicious parameter values containing path traversal sequences

Monitoring Recommendations

• Enable detailed logging for the phpFileManager application and web server to capture all parameter values in requests
• Set up alerts for any access attempts to sensitive system files from the web server context
• Regularly audit server access logs for signs of exploitation attempts or successful file inclusion attacks

How to Mitigate CVE-2019-25632

Immediate Actions Required

• Remove or disable phpFileManager 1.7.8 from production environments until a patched version is available
• Restrict access to phpFileManager to trusted networks or authenticated users only using server-level access controls
• Implement a Web Application Firewall (WAF) to filter malicious requests containing directory traversal patterns

Patch Information

No vendor patch information is currently available for this vulnerability. Organizations using phpFileManager 1.7.8 should consider migrating to alternative file management solutions or implementing strict access controls and input validation at the server level. Refer to the VulnCheck Advisory on PHPFileManager for the latest updates on this vulnerability.

Workarounds

• Deploy a reverse proxy or WAF with rules blocking requests containing ../ or encoded traversal sequences in URL parameters
• Use .htaccess or server configuration to restrict access to index.php and require authentication
• Implement PHP open_basedir restrictions to limit file access to the web application directory only

# Apache .htaccess example to restrict phpFileManager access
<Files "index.php">
    AuthType Basic
    AuthName "Restricted Access"
    AuthUserFile /etc/apache2/.htpasswd
    Require valid-user
</Files>

# PHP open_basedir restriction in php.ini
open_basedir = /var/www/phpfilemanager:/tmp