CVE-2025-20231
📋 TL;DR
This vulnerability allows low-privileged Splunk users to run searches with higher-privileged user permissions through a phishing attack, potentially exposing sensitive data. It affects Splunk Enterprise and Splunk Secure Gateway app on Splunk Cloud Platform. Exploitation requires tricking a victim into initiating a browser request.
💻 Affected Systems
- Splunk Enterprise
- Splunk Secure Gateway app on Splunk Cloud Platform
📦 What is this software?
Splunk by Splunk
Splunk by Splunk
Splunk by Splunk
Splunk by Splunk
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized disclosure of sensitive information (credentials, PII, proprietary data) stored in Splunk to low-privileged users through elevated search permissions.
Likely Case
Limited data exposure from targeted phishing attacks against specific users with higher privileges, potentially revealing some sensitive search results.
If Mitigated
Minimal impact with proper user awareness training, phishing protections, and role-based access controls limiting sensitive data exposure.
🎯 Exploit Status
Exploitation requires social engineering (phishing) to trick higher-privileged user into initiating request. Cannot be exploited at will by low-privileged user alone.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Splunk Enterprise: 9.4.1, 9.3.3, 9.2.5, 9.1.8 or later; Splunk Secure Gateway: 3.8.38, 3.7.23 or later
Vendor Advisory: https://advisory.splunk.com/advisories/SVD-2025-0302
Restart Required: No
Instructions:
1. Identify affected Splunk Enterprise or Splunk Secure Gateway versions. 2. Upgrade to patched versions following Splunk upgrade documentation. 3. Verify upgrade completion and functionality.
🔧 Temporary Workarounds
Implement phishing awareness training
allEducate users about phishing risks and safe browsing practices to reduce likelihood of successful exploitation.
Restrict sensitive data access
allLimit sensitive information in Splunk searches through role-based access controls and data classification.
🧯 If You Can't Patch
- Implement strict phishing protections (email filtering, web filtering, endpoint protection)
- Monitor for unusual search activity from low-privileged users accessing sensitive data
🔍 How to Verify
Check if Vulnerable:
Check Splunk version via web interface (Settings > Server Info) or CLI command.Check Version:
On Splunk server: splunk versionVerify Fix Applied:
Confirm version is at or above patched versions: Splunk Enterprise 9.4.1/9.3.3/9.2.5/9.1.8 or Splunk Secure Gateway 3.8.38/3.7.23.📡 Detection & Monitoring
Log Indicators:
- Unusual search patterns from low-privileged users accessing sensitive data
- Failed authentication attempts followed by successful elevated searches
Network Indicators:
- Suspicious HTTP requests to Splunk search endpoints with unexpected privilege escalation
SIEM Query:
index=_audit action=search user=* | search NOT (roles="admin" OR roles="power") | stats count by user, search