CVE-2023-25560
📋 TL;DR
This vulnerability in DataHub's AuthServiceClient allows attackers to manipulate JSON strings with user-controlled data, potentially leading to authentication bypass and unauthorized system account creation. All DataHub instances running vulnerable versions are affected, which could result in full system compromise.
💻 Affected Systems
- DataHub
📦 What is this software?
Datahub by Datahub
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through authentication bypass, unauthorized account creation, and complete control over the DataHub instance.
Likely Case
Authentication bypass leading to unauthorized access, privilege escalation, and potential data exfiltration or manipulation.
If Mitigated
Limited impact with proper network segmentation and access controls, but still vulnerable to authenticated users.
🎯 Exploit Status
Exploitation requires understanding of JSON manipulation and DataHub's authentication flow, but no public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.10.0 and later
Vendor Advisory: https://github.com/datahub-project/datahub/security/advisories/GHSA-6rpf-5cfg-h8f3
Restart Required: Yes
Instructions:
1. Backup your DataHub instance. 2. Upgrade to DataHub v0.10.0 or later. 3. Restart all DataHub services. 4. Verify the upgrade was successful.
🧯 If You Can't Patch
- Isolate DataHub instance from untrusted networks and internet access.
- Implement strict network access controls and monitor for suspicious authentication attempts.
🔍 How to Verify
Check if Vulnerable:
Check DataHub version: if running version earlier than v0.10.0, the system is vulnerable.Check Version:
Check DataHub deployment configuration or run: kubectl get pods -n datahub -o jsonpath='{.items[*].spec.containers[*].image}' (for Kubernetes deployments)Verify Fix Applied:
Verify DataHub version is v0.10.0 or later and test authentication flows for expected behavior.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns
- Multiple failed login attempts followed by successful login from same IP
- Account creation events from unexpected sources
Network Indicators:
- Unusual JSON payloads in authentication requests
- Multiple authentication requests with varying JSON structures
SIEM Query:
source="datahub" AND (event_type="authentication" OR event_type="account_creation") AND (payload CONTAINS "}" OR payload CONTAINS "{") | stats count by src_ip, user