CVE-2016-5081
📋 TL;DR
ZModo ZP-NE14-S and ZP-IBH-13W devices have a hardcoded root password that cannot be changed, allowing remote attackers to gain full administrative access via telnet. This affects all users of these specific ZModo camera models with default configurations.
💻 Affected Systems
- ZModo ZP-NE14-S
- ZModo ZP-IBH-13W
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to disable cameras, access video feeds, pivot to internal networks, or install persistent malware.
Likely Case
Unauthorized access to camera feeds, device configuration changes, and potential use as botnet nodes.
If Mitigated
Limited impact if telnet is disabled and devices are isolated from untrusted networks.
🎯 Exploit Status
Exploitation requires only telnet access and knowledge of hardcoded password. No authentication bypass needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None
Vendor Advisory: http://www.kb.cert.org/vuls/id/301735
Restart Required: No
Instructions:
No official patch exists. Vendor has not released firmware updates to address this vulnerability.
🔧 Temporary Workarounds
Disable Telnet Service
linuxCompletely disable telnet service on affected devices to prevent remote access.
telnetd -l /bin/sh -p 23 &
killall telnetd
iptables -A INPUT -p tcp --dport 23 -j DROP
Network Segmentation
allIsolate affected devices in separate VLAN with strict firewall rules blocking telnet access.
🧯 If You Can't Patch
- Replace affected devices with models from vendors that provide security updates
- Implement network monitoring for telnet connections to device IPs
🔍 How to Verify
Check if Vulnerable:
Attempt telnet connection to device port 23 and use hardcoded root password if prompted.Check Version:
cat /etc/version or check device web interface for firmware versionVerify Fix Applied:
Verify telnet service is not running (netstat -tlnp | grep :23) and connection attempts fail.📡 Detection & Monitoring
Log Indicators:
- Telnet authentication attempts
- Successful root logins via telnet
- Unusual telnet connections
Network Indicators:
- Telnet traffic to device IPs on port 23
- Multiple failed/successful telnet auth attempts
SIEM Query:
source="network" dest_port=23 AND (event_type="connection_successful" OR auth_result="success")