CVE-2022-32276
📋 TL;DR
CVE-2022-32276 allows unauthenticated access to Grafana dashboard snapshots via specific URLs, bypassing authentication requirements. This affects Grafana instances with snapshot sharing enabled. The vendor considers this a UI bug rather than a security vulnerability.
💻 Affected Systems
- Grafana
📦 What is this software?
Grafana by Grafana
⚠️ Risk & Real-World Impact
Worst Case
Unauthenticated attackers could access sensitive dashboard snapshots containing confidential monitoring data, configuration details, or business intelligence information.
Likely Case
Exposure of dashboard snapshots that may contain internal metrics, system status information, or operational data to unauthorized users.
If Mitigated
Limited exposure of non-sensitive dashboard snapshots with proper access controls and monitoring in place.
🎯 Exploit Status
Simple URL manipulation required; vendor disputes this is a security vulnerability
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: https://github.com/grafana/grafana/issues/50336
Restart Required: No
Instructions:
Vendor considers this a UI bug, not a security vulnerability. No official patch exists. Consider upgrading to latest version and implementing workarounds.
🔧 Temporary Workarounds
Disable Snapshot Sharing
allDisable the snapshot sharing feature in Grafana configuration
Set [snapshots]\nexternal_enabled = false in grafana.ini
Network Access Controls
linuxRestrict access to Grafana snapshot endpoints using firewall rules or reverse proxy configurations
iptables -A INPUT -p tcp --dport 3000 -m string --string "/dashboard/snapshot/" --algo bm -j DROP
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Grafana instances
- Enable authentication requirements for all dashboard access and monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Attempt to access http://[grafana-host]/dashboard/snapshot/*?orgId=0 without authenticationCheck Version:
grafana-server -vVerify Fix Applied:
Verify snapshot sharing is disabled in configuration and test access attempts fail📡 Detection & Monitoring
Log Indicators:
- Unauthenticated requests to /dashboard/snapshot/* endpoints
- Access from unexpected IP addresses to snapshot URLs
Network Indicators:
- HTTP GET requests to snapshot endpoints without authentication headers
- Traffic patterns showing snapshot access from external networks
SIEM Query:
source="grafana.log" AND (url="/dashboard/snapshot/*" OR url="/api/snapshots/*") AND NOT (user!="anonymous" OR auth_success="true")