CVE-2024-47218
📋 TL;DR
CVE-2024-47218 is an authentication bypass vulnerability in vesoft NebulaGraph that allows attackers to access the system without valid credentials. This affects all NebulaGraph deployments up to version 3.8.0. The vulnerability enables unauthorized access to graph databases and their data.
💻 Affected Systems
- vesoft NebulaGraph
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of NebulaGraph instances allowing data theft, data manipulation, privilege escalation, and potential lateral movement to connected systems.
Likely Case
Unauthorized access to sensitive graph data, data exfiltration, and potential data corruption or deletion.
If Mitigated
Limited impact if network segmentation, strict access controls, and monitoring are in place to detect unauthorized access attempts.
🎯 Exploit Status
The authentication bypass mechanism appears straightforward based on the fix commit, making exploitation relatively simple.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after the fix commit cd6c5976ccfe817b2e0a2d46227cd361bfefb45c
Vendor Advisory: https://github.com/vesoft-inc/nebula/pull/5936
Restart Required: Yes
Instructions:
1. Update NebulaGraph to a version containing commit cd6c5976ccfe817b2e0a2d46227cd361bfefb45c. 2. Restart all NebulaGraph services. 3. Verify authentication is properly enforced.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to NebulaGraph instances using firewalls or network policies
Authentication Proxy
allImplement a reverse proxy with additional authentication layer in front of NebulaGraph
🧯 If You Can't Patch
- Implement strict network access controls to limit connections to trusted sources only
- Enable comprehensive logging and monitoring for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check NebulaGraph version: if version is 3.8.0 or earlier, the system is vulnerable. Attempt authentication with invalid credentials to test bypass.Check Version:
nebula --version or check NebulaGraph service logs for version informationVerify Fix Applied:
After patching, attempt to authenticate with invalid credentials - access should be denied. Verify the fix commit is present in your installation.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful access
- Authentication bypass patterns in access logs
- Unexpected user sessions from unauthenticated sources
Network Indicators:
- Unauthorized API calls to NebulaGraph endpoints
- GraphQL or other queries from unauthenticated sources
SIEM Query:
source="nebula" AND (event_type="auth_failure" AND result="success") OR (auth_method="none" AND result="success")