CVE-2025-14038
📋 TL;DR
EDB Hybrid Manager contains an authentication bypass vulnerability in gRPC endpoints due to Istio Gateway misconfiguration. Unauthenticated attackers can access sensitive data or cause denial-of-service by writing malformed data. All EDB Hybrid Manager deployments are affected until patched.
💻 Affected Systems
- EDB Hybrid Manager
📦 What is this software?
Hybrid Manager by Enterprisedb
Hybrid Manager by Enterprisedb
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of sensitive database management data, potential data exfiltration, and service disruption through DoS attacks.
Likely Case
Unauthorized access to sensitive configuration data, metadata, or operational information from the Hybrid Manager service.
If Mitigated
Limited impact with proper network segmentation and access controls, though vulnerability still exists.
🎯 Exploit Status
Direct access to gRPC endpoints without authentication. Attackers need to identify vulnerable endpoints and craft appropriate gRPC requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.3 (LTS) or 2025.12 (Innovation)
Vendor Advisory: https://www.enterprisedb.com/docs/security/advisories/cve202514038/
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Upgrade Hybrid Manager to version 1.3.3 (LTS) or 2025.12 (Innovation). 3. Restart all Hybrid Manager services. 4. Verify Istio Gateway configuration includes proper authentication rules for all endpoints.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to Hybrid Manager gRPC endpoints using firewall rules
iptables -A INPUT -p tcp --dport [GRPC_PORT] -s [TRUSTED_NETWORK] -j ACCEPT
iptables -A INPUT -p tcp --dport [GRPC_PORT] -j DROP
Istio Gateway Rule Update
allManually update Istio Gateway configuration to include authentication requirements for all endpoints
kubectl edit gateway [HYBRID_MANAGER_GATEWAY] -n [NAMESPACE]
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Hybrid Manager from untrusted networks
- Deploy Web Application Firewall (WAF) or API gateway with authentication enforcement in front of gRPC endpoints
🔍 How to Verify
Check if Vulnerable:
Attempt unauthenticated gRPC calls to Hybrid Manager endpoints. Check if requests succeed without credentials.Check Version:
hybrid-manager --version or check deployment manifest for versionVerify Fix Applied:
Verify upgrade to patched version and test that unauthenticated gRPC requests are rejected with proper authentication errors.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated gRPC requests to sensitive endpoints
- Failed authentication attempts bypassing expected auth flow
- Unusual gRPC traffic patterns
Network Indicators:
- gRPC traffic from unexpected sources
- High volume of gRPC requests without authentication headers
- Malformed gRPC payloads
SIEM Query:
source="hybrid-manager" AND (grpc.request.auth="none" OR grpc.request.auth="invalid")