CVE-2025-9909: Ansible Automation Platform Gateway Vuln

CVE-2025-9909 Overview

A flaw was found in the Red Hat Ansible Automation Platform Gateway route creation component. This vulnerability allows credential theft via the creation of misleading routes using a double-slash (//) prefix in the gateway_path. A malicious or socially engineered administrator can configure a honey-pot route to intercept and exfiltrate user credentials, potentially maintaining persistent access or creating a backdoor even after their permissions are revoked.

Critical Impact

This vulnerability enables insider threats or compromised administrators to establish persistent credential harvesting mechanisms that survive privilege revocation, creating long-term unauthorized access to Ansible Automation Platform environments.

Affected Products

• Red Hat Ansible Automation Platform Gateway
• Ansible Automation Platform route creation components
• Systems utilizing the gateway_path routing functionality

Discovery Timeline

• 2026-02-27 - CVE-2025-9909 published to NVD
• 2026-02-27 - Last updated in NVD database

Technical Details for CVE-2025-9909

Vulnerability Analysis

This vulnerability falls under CWE-647 (Use of Non-Canonical URL Paths for Authorization Decisions), which occurs when a security mechanism processes URL paths without proper canonicalization, allowing attackers to bypass security controls through path manipulation.

The flaw exists in how the Ansible Automation Platform Gateway processes route definitions. When an administrator creates a route with a double-slash prefix in the gateway_path parameter, the gateway fails to properly sanitize or validate this input. This oversight allows the creation of routes that can masquerade as legitimate endpoints, intercepting credentials as users attempt to authenticate.

The attack requires local access and high privileges, as only administrators can create gateway routes. However, the vulnerability is particularly dangerous because it enables a compromised or malicious administrator to establish persistence mechanisms that continue to operate even after their administrative access is revoked.

Root Cause

The root cause stems from improper validation of the gateway_path parameter during route creation. The gateway component does not properly canonicalize URL paths or detect potentially malicious path patterns such as double-slash prefixes. This lack of input validation allows non-canonical URL paths to be registered as valid routes, which can then be exploited to intercept traffic intended for legitimate endpoints.

Attack Vector

The attack requires local access to the Ansible Automation Platform with administrative privileges to create gateway routes. An attacker exploiting this vulnerability would:

1. Create a deceptive route using a double-slash (//) prefix in the gateway_path parameter
2. Configure this route to intercept authentication requests intended for legitimate services
3. Harvest credentials from users who unknowingly submit them to the malicious route
4. Maintain persistent access even after the attacker's administrative privileges are revoked, as the malicious route remains active

The vulnerability is particularly concerning in environments where multiple administrators have route creation privileges, or where social engineering could be used to convince a legitimate administrator to create the malicious route.

Detection Methods for CVE-2025-9909

Indicators of Compromise

• Routes configured with double-slash (//) prefixes in the gateway_path parameter
• Unexpected or unauthorized gateway routes that mirror legitimate authentication endpoints
• Routes created by administrators whose access has since been revoked
• Anomalous authentication traffic patterns indicating credential interception

Detection Strategies

• Audit all existing gateway routes for non-canonical path patterns, particularly those containing double-slash prefixes
• Implement monitoring for route creation events and alert on suspicious path configurations
• Review route configurations during security assessments to identify potential honey-pot routes
• Correlate route creation events with administrator activity logs to detect unauthorized changes

Monitoring Recommendations

• Enable comprehensive logging for all gateway route creation and modification events
• Configure alerts for routes containing special characters or non-standard path patterns
• Regularly review the list of active routes against a baseline of approved configurations
• Monitor authentication patterns for anomalies that could indicate credential interception

How to Mitigate CVE-2025-9909

Immediate Actions Required

• Review all existing gateway routes for double-slash prefixes or other suspicious path patterns
• Remove any unauthorized or suspicious routes immediately
• Audit administrator access and revoke unnecessary route creation privileges
• Apply the latest security patches from Red Hat as outlined in the security advisories

Patch Information

Red Hat has released multiple security advisories addressing this vulnerability. Organizations should apply the appropriate patches based on their Ansible Automation Platform version:

• Red Hat Security Advisory RHSA-2025:21768
• Red Hat Security Advisory RHSA-2025:21775
• Red Hat Security Advisory RHSA-2025:23069
• Red Hat Security Advisory RHSA-2025:23131

For additional details, refer to the Red Hat CVE Analysis for CVE-2025-9909 and Red Hat Bug Report #2392836.

Workarounds

• Implement strict change control processes for gateway route creation requiring secondary approval
• Restrict route creation privileges to a minimal set of highly trusted administrators
• Perform regular security audits of gateway route configurations to identify non-canonical paths
• Consider implementing automated validation scripts that detect routes with suspicious path patterns

# Example audit command to identify routes with double-slash patterns
# Review gateway routes for suspicious path configurations
grep -r "//" /path/to/gateway/route/configs/ | grep "gateway_path"

# List all configured routes and review for anomalies
ansible-automation-platform route list --format=json | jq '.[] | select(.gateway_path | contains("//"))'