CVE-2025-20059: PingAM Java Policy Agent Path Traversal

CVE-2025-20059 Overview

CVE-2025-20059 is a Relative Path Traversal vulnerability affecting Ping Identity PingAM Java Policy Agent that allows Parameter Injection. This vulnerability enables unauthenticated attackers to manipulate path parameters and potentially bypass security controls implemented by the policy agent. The flaw stems from improper validation of relative path components, which can be exploited to inject malicious parameters into requests processed by the agent.

Critical Impact

This critical vulnerability allows unauthenticated remote attackers to exploit path traversal weaknesses for parameter injection, potentially compromising the integrity of access control decisions made by PingAM Java Policy Agent.

Affected Products

• PingAM Java Policy Agent through version 5.10.3
• PingAM Java Policy Agent through version 2023.11.1
• PingAM Java Policy Agent through version 2024.9

Discovery Timeline

• 2025-02-20 - CVE CVE-2025-20059 published to NVD
• 2025-02-20 - Last updated in NVD database

Technical Details for CVE-2025-20059

Vulnerability Analysis

This vulnerability is classified under CWE-23 (Relative Path Traversal), which occurs when software uses external input to construct a pathname that should be within a restricted directory but fails to properly neutralize sequences such as .. or other relative path elements. In the context of PingAM Java Policy Agent, this weakness enables attackers to craft malicious requests containing path traversal sequences that are not properly sanitized before being processed by the agent.

The attack can be executed remotely over the network without requiring any user interaction or prior authentication. Successful exploitation could allow attackers to inject parameters that alter the behavior of the policy agent, potentially leading to unauthorized access to protected resources or manipulation of security policy enforcement decisions.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the PingAM Java Policy Agent's request handling logic. The agent fails to properly sanitize and normalize path components before using them in security-critical operations. Specifically, the agent does not adequately strip or reject relative path sequences (such as ../ or ..\) from incoming requests, allowing attackers to traverse directory boundaries and inject parameters that should not be accessible.

Attack Vector

The attack vector for CVE-2025-20059 is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending specially crafted HTTP requests to a web application protected by the vulnerable PingAM Java Policy Agent.

The attack flow involves:

1. An attacker identifies a target application protected by PingAM Java Policy Agent
2. The attacker crafts malicious requests containing relative path traversal sequences combined with parameter injection payloads
3. The vulnerable agent processes these requests without properly neutralizing the traversal sequences
4. The injected parameters are passed to the backend application or influence policy decisions
5. This may result in unauthorized access or security control bypass

For detailed technical information about this vulnerability, refer to the ForgeRock Security Advisory.

Detection Methods for CVE-2025-20059

Indicators of Compromise

• HTTP request logs containing unusual path traversal sequences such as ../, ..%2f, or %2e%2e/ targeting protected resources
• Unexpected parameter values appearing in policy agent logs that do not match legitimate application patterns
• Access log entries showing successful requests to resources that should be restricted by policy
• Anomalous authentication or authorization events in PingAM audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in incoming requests
• Configure PingAM audit logging to capture detailed request information and monitor for anomalous access patterns
• Deploy network-based intrusion detection systems (IDS) with signatures for common path traversal attack patterns
• Enable verbose logging on the Java Policy Agent to capture full request details for forensic analysis

Monitoring Recommendations

• Continuously monitor policy agent logs for requests containing encoded or double-encoded path traversal sequences
• Set up alerting for unusual spikes in authorization failures that may indicate exploitation attempts
• Implement real-time monitoring of protected application access patterns to detect unauthorized resource access
• Regularly review and correlate PingAM access logs with backend application logs to identify discrepancies

How to Mitigate CVE-2025-20059

Immediate Actions Required

• Identify all deployments of PingAM Java Policy Agent versions 5.10.3 and earlier, 2023.11.1 and earlier, or 2024.9 and earlier
• Review the ForgeRock Security Advisory for the latest patch information
• Implement additional input validation at the web server or WAF level to filter path traversal attempts as a temporary control
• Audit access logs for any signs of exploitation attempts prior to patching

Patch Information

Ping Identity has released security updates to address this vulnerability. Administrators should consult the ForgeRock Security Advisory for specific patch versions and upgrade instructions. Organizations should prioritize patching given the critical severity rating and the network-accessible attack vector that requires no authentication.

Workarounds

• Deploy a Web Application Firewall (WAF) with rules configured to block path traversal sequences in HTTP requests
• Implement strict input validation at the reverse proxy or load balancer level to sanitize incoming requests before they reach the policy agent
• Restrict network access to the policy agent to trusted internal networks where feasible
• Enable enhanced logging and monitoring to detect exploitation attempts while awaiting patch deployment

# Example WAF rule configuration for Apache ModSecurity
# Block common path traversal patterns
SecRule REQUEST_URI "@contains ../" \
    "id:100001,phase:1,deny,status:403,log,msg:'Path traversal attempt blocked'"
SecRule REQUEST_URI "@contains %2e%2e" \
    "id:100002,phase:1,deny,status:403,log,msg:'Encoded path traversal attempt blocked'"