CVE-2025-0115: PAN-OS Information Disclosure Vulnerability

CVE-2025-0115 Overview

A vulnerability in Palo Alto Networks PAN-OS software enables an authenticated administrator on the PAN-OS CLI to read arbitrary files. This arbitrary file read vulnerability allows attackers with administrative access to the command-line interface to access sensitive system files that should be restricted, potentially exposing configuration data, credentials, or other sensitive information stored on the device.

The attacker must have network access to the management interface (web, SSH, console, or telnet) and successfully authenticate to exploit this issue. Organizations can significantly reduce the risk by restricting access to the management interface to only trusted users and internal IP addresses according to Palo Alto Networks' recommended critical deployment guidelines.

Critical Impact

Authenticated administrators can read arbitrary files on the PAN-OS system, potentially exposing sensitive configuration data, credentials, and security policies. This issue does not affect Cloud NGFW or Prisma Access.

Affected Products

• Palo Alto Networks PAN-OS (various versions - see vendor advisory)
• PAN-OS Management Interface (web, SSH, console, telnet access)
• On-premises Next-Generation Firewall deployments

Discovery Timeline

• March 12, 2025 - CVE-2025-0115 published to NVD
• March 15, 2025 - Last updated in NVD database

Technical Details for CVE-2025-0115

Vulnerability Analysis

This vulnerability is classified under CWE-41 (Improper Resolution of Path Equivalence), which occurs when a system fails to properly handle different representations of file paths that ultimately resolve to the same file system location. In the context of PAN-OS, this weakness allows an authenticated administrator with CLI access to craft requests that bypass intended file access restrictions.

The vulnerability requires local access context, meaning an attacker needs to establish a session to the management interface first. While authentication is required, the privileges needed are relatively low—standard administrative access is sufficient for exploitation. No user interaction is required once the attacker has authenticated to the CLI.

The primary impact is on confidentiality, as successful exploitation allows reading of arbitrary files on the system. This could include sensitive configuration files, stored credentials, certificate private keys, or other security-critical data. The vulnerability does not directly impact system integrity or availability.

Root Cause

The root cause of this vulnerability is CWE-41: Improper Resolution of Path Equivalence. This weakness occurs when the software does not properly normalize or validate file paths before using them to access files. Different path representations (such as using ../ sequences, symbolic links, or alternative path syntaxes) can be used to escape intended directory restrictions and access files outside of authorized locations.

In PAN-OS, the CLI file access mechanisms do not adequately validate or canonicalize user-supplied file paths, allowing authenticated administrators to specify paths that resolve to files outside of intended access boundaries.

Attack Vector

The attack requires an authenticated session to the PAN-OS management interface. An attacker with valid administrative credentials can connect via SSH, console, telnet, or web interface, then access the CLI. From the CLI, the attacker can utilize commands that accept file path parameters and craft specially formatted paths that bypass intended restrictions.

The attack flow involves:

1. Establishing network connectivity to the PAN-OS management interface
2. Authenticating with valid administrative credentials
3. Accessing the command-line interface
4. Executing commands with crafted file path arguments that exploit the path equivalence weakness
5. Reading contents of arbitrary files on the system

This vulnerability allows reading sensitive files but does not directly enable code execution or system modification. However, exposed credentials or configuration data could be leveraged for further attacks.

Detection Methods for CVE-2025-0115

Indicators of Compromise

• Unusual CLI commands accessing file paths outside normal operational directories
• Repeated file read operations targeting system configuration or credential storage locations
• Administrative sessions accessing sensitive file paths such as /etc/passwd, certificate stores, or configuration backups
• Anomalous patterns in CLI command history from administrative accounts

Detection Strategies

• Enable comprehensive logging of all CLI commands executed by administrative users
• Monitor for file access patterns that include path traversal sequences (../) or unusual path formats
• Implement alerting on access attempts to sensitive system directories from CLI sessions
• Review administrative access logs for sessions that deviate from normal operational patterns
• Deploy network traffic analysis to detect unusual data exfiltration from management interfaces

Monitoring Recommendations

• Configure centralized logging for all PAN-OS management interface access attempts
• Establish baseline patterns of normal administrative CLI usage to identify anomalies
• Implement real-time alerting for access to high-value files or directories
• Regularly audit administrative account usage and access patterns
• Monitor for bulk file read operations or systematic directory enumeration via CLI

How to Mitigate CVE-2025-0115

Immediate Actions Required

• Restrict management interface access to trusted internal IP addresses only
• Review and minimize the number of users with administrative CLI access
• Implement network segmentation to isolate management interfaces from general network traffic
• Enable comprehensive audit logging for all administrative actions
• Apply available patches from Palo Alto Networks as soon as possible

Patch Information

Palo Alto Networks has published a security advisory for this vulnerability. Organizations should consult the official Palo Alto Networks Security Advisory for specific version information and patch availability. Apply the appropriate patches for your PAN-OS version following vendor guidance and your organization's change management procedures.

Workarounds

• Restrict access to the management interface to only trusted users and internal IP addresses following Palo Alto Networks' critical deployment guidelines
• Implement jump servers or bastion hosts for administrative access to reduce direct exposure
• Enable multi-factor authentication for all administrative accounts accessing the management interface
• Consider implementing privileged access management (PAM) solutions to monitor and control administrative sessions
• Disable unused management interface access methods (telnet, console) where not required

# Configuration example - Restrict management interface access
# Apply IP-based access restrictions to management interface
# Consult Palo Alto Networks documentation for specific CLI syntax

# General approach:
# 1. Define permitted IP ranges for management access
# 2. Configure management interface access policies
# 3. Disable unnecessary access methods (telnet, HTTP)
# 4. Enable audit logging for all administrative actions
# 5. Implement MFA for administrative accounts