CVE-2016-9796
📋 TL;DR
CVE-2016-9796 is an authentication bypass vulnerability in Alcatel-Lucent OmniVista 8770 that allows unauthenticated attackers to execute arbitrary commands with SYSTEM privileges via exposed CORBA/IIOP interfaces. This affects OmniVista 8770 versions 2.0 through 3.0. Attackers can remotely exploit this to gain complete control of affected servers.
💻 Affected Systems
- Alcatel-Lucent OmniVista 8770
📦 What is this software?
Omnivista 8770 Network Management System by Alcatel Lucent
View all CVEs affecting Omnivista 8770 Network Management System →
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the OmniVista server with SYSTEM privileges, allowing attackers to install malware, steal data, pivot to other systems, or disrupt network management operations.
Likely Case
Remote code execution leading to server compromise, data theft, and potential lateral movement within the network infrastructure.
If Mitigated
Limited to internal network access only, with firewall rules preventing external exploitation.
🎯 Exploit Status
Multiple public exploits exist, including Python scripts and Metasploit modules. Exploitation requires only network access to port 30024.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not provided by vendor
Vendor Advisory: Not publicly available
Restart Required: No
Instructions:
No official patch available. Vendor recommends applying proper firewall rules as per technical guidelines.
🔧 Temporary Workarounds
Network Segmentation and Firewall Rules
allBlock all external access to TCP port 30024 and restrict internal access to only authorized management systems.
# Windows Firewall: netsh advfirewall firewall add rule name="Block OmniVista GIOP" dir=in action=block protocol=TCP localport=30024
# Linux iptables: iptables -A INPUT -p tcp --dport 30024 -j DROP
Service Restriction
windowsConfigure OmniVista to bind only to specific interfaces or disable unnecessary CORBA/IIOP services if possible.
🧯 If You Can't Patch
- Implement strict network segmentation with firewall rules blocking all access to port 30024 except from authorized management stations.
- Monitor network traffic to port 30024 for suspicious activity and implement intrusion detection rules.
🔍 How to Verify
Check if Vulnerable:
Test if TCP port 30024 is open and accessible, then use public exploit scripts to verify if GIOP/CORBA interfaces respond without authentication.Check Version:
Check OmniVista version through the web interface or application properties (typically shows version in About section).Verify Fix Applied:
Verify port 30024 is not accessible from unauthorized networks and test that exploit attempts fail.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation events from OmniVista services
- Failed authentication attempts followed by successful command execution
- GIOP protocol traffic on port 30024 from unexpected sources
Network Indicators:
- GIOP protocol traffic to port 30024 from unauthorized IPs
- Unusual outbound connections from OmniVista server post-exploitation
SIEM Query:
source_port=30024 OR dest_port=30024 AND (protocol="giop" OR protocol="iiop")🔗 References
- http://blog.malerisch.net/2016/12/alcatel-omnivista-8770-unauth-rce-giop-corba.html
- http://www.securityfocus.com/bid/94649
- https://github.com/malerisch/omnivista-8770-unauth-rce
- https://www.exploit-db.com/exploits/40862/
- https://www.youtube.com/watch?v=aq37lQKa9sk
- http://blog.malerisch.net/2016/12/alcatel-omnivista-8770-unauth-rce-giop-corba.html
- http://www.securityfocus.com/bid/94649
- https://github.com/malerisch/omnivista-8770-unauth-rce
- https://www.exploit-db.com/exploits/40862/
- https://www.youtube.com/watch?v=aq37lQKa9sk
