CVE-2025-25012: Elastic Kibana SSRF Vulnerability

CVE-2025-25012 Overview

URL redirection to an untrusted site ('Open Redirect') in Kibana can lead to sending a user to an arbitrary site and server-side request forgery via a specially crafted URL.

Critical Impact
An attacker could exploit this vulnerability to redirect users to malicious sites, potentially leading to phishing attacks or further exploitation via server-side request forgery.

Affected Products

elastic kibana

Discovery Timeline

2025-06-25 - CVE CVE-2025-25012 published to NVD
2025-09-30 - Last updated in NVD database

Technical Details for CVE-2025-25012

Vulnerability Analysis

The vulnerability arises from insufficient validation of URL redirects in Kibana, allowing attackers to craft URLs that can redirect users to untrusted destinations. This can be leveraged for server-side request forgery attacks under certain configurations.

Root Cause

The root cause is a lack of proper sanitization and validation of redirect URLs within the Kibana application.

Attack Vector

An attacker can exploit this vulnerability via network by crafting a specially formulated URL that deceives users or client applications to request unintended URLs.

javascript

// Example exploitation code (sanitized)
var openRedirectUrl = '/redirect?url=https://malicious-site.com';
window.location.href = openRedirectUrl;

Detection Methods for CVE-2025-25012

Indicators of Compromise

Unusual redirects from Kibana not correlated with user actions
Requests for unexpected external URLs from within the Kibana environment

Detection Strategies

Monitoring outgoing requests from Kibana that are redirected to untrusted domains can indicate exploitation attempts. Inspect HTTP referrer headers and request logs for unusual redirect patterns.

Monitoring Recommendations

Configure network activity logs to capture URL redirections from Kibana. Use threat intelligence feeds to cross-reference suspicious domains accessed via redirects.

How to Mitigate CVE-2025-25012

Immediate Actions Required

Apply the latest patch from Elastic
Enable strict URL validation in Kibana configurations
Educate users about the risks of open redirects and phishing

Patch Information

Patches for this vulnerability are available and can be accessed from the following advisory: Elastic Security Advisory

Workarounds

Consider restricting URL redirects within Kibana to trusted domains if patching is not immediately possible.

bash

# Configuration example
echo "Disabling open redirects" >> /etc/kibana/kibana.yml
xpack.security.openRedirect.enabled: false