Palo Alto Networks PAN-OS Management Web Interface Authenticated File Read Vulnerability (CVE-2025-0111) Analysis and Mitigation Guide

1. Vulnerability Overview & Root Cause

CVE-2025-0111 is an authenticated file read vulnerability in the Palo Alto Networks PAN-OS management web interface. The root cause lies in improper input validation and path handling (CWE-73, CWE-610), which allows an authenticated user with network access to the management interface to bypass directory restrictions. Although the file access is restricted to the privileges of the 'nobody' user, it still permits unauthorized retrieval of sensitive system configuration files and logs.

2. Exploitation Mechanics & Attack Scenario

To exploit this vulnerability, an attacker must first obtain valid credentials (even with low privileges) to authenticate to the PAN-OS management web interface. Once authenticated, the attacker sends crafted HTTP requests containing directory traversal sequences or direct file paths to vulnerable endpoints. Because the application fails to properly sanitize these inputs, the web server retrieves and returns the contents of files readable by the 'nobody' user, exposing internal system details to the attacker.

3. Infrastructure & Business Impact

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. While exploitation requires authentication and is limited to 'nobody' user permissions, the exposed information can be leveraged to plan sophisticated secondary attacks, such as privilege escalation or remote code execution. Compromising a core firewall device poses a severe threat to the entire enterprise network perimeter and business continuity.