CVE-2018-10865
📋 TL;DR
CVE-2018-10865 is an authorization bypass vulnerability in Red Hat Certification 7 that allows unauthenticated users to trigger restart operations on any host accessible to the system. This affects systems running Red Hat Certification 7 with the vulnerable /configuration view exposed.
💻 Affected Systems
- Red Hat Certification
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could cause denial of service by restarting critical systems, potentially disrupting business operations and causing data loss if systems restart during active transactions.
Likely Case
Unauthorized system restarts leading to service disruption and potential data corruption on affected hosts.
If Mitigated
With proper network segmentation and authentication controls, impact is limited to isolated systems with minimal business impact.
🎯 Exploit Status
Exploitation requires sending HTTP requests to the vulnerable endpoint. No special tools or advanced knowledge needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Red Hat Certification 7 with updated packages
Vendor Advisory: https://access.redhat.com/security/cve/CVE-2018-10865
Restart Required: Yes
Instructions:
1. Update Red Hat Certification packages via yum update. 2. Restart the Red Hat Certification service. 3. Verify the fix by checking version and testing the endpoint.
🔧 Temporary Workarounds
Network Access Control
linuxRestrict network access to Red Hat Certification service to trusted IPs only
iptables -A INPUT -p tcp --dport [REDHAT_CERT_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [REDHAT_CERT_PORT] -j DROP
Authentication Enforcement
linuxConfigure the service to require authentication for all endpoints
Edit Red Hat Certification configuration to enforce authentication
🧯 If You Can't Patch
- Isolate the Red Hat Certification system on a separate network segment with strict access controls
- Implement web application firewall rules to block unauthorized access to the /configuration endpoint
🔍 How to Verify
Check if Vulnerable:
Test if unauthenticated HTTP requests to /configuration endpoint can trigger restart operationsCheck Version:
rpm -q redhat-certificationVerify Fix Applied:
Verify that authentication is now required for the /configuration endpoint and restart operations📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access attempts to /configuration endpoint
- Unexpected system restart events from Red Hat Certification service
Network Indicators:
- HTTP POST requests to /configuration endpoint without authentication headers
- Unusual restart commands from Red Hat Certification service
SIEM Query:
source="redhat-certification" AND (uri_path="/configuration" OR message="restart") AND NOT auth_success="true"