CVE-2015-2100
📋 TL;DR
This CVE describes multiple stack-based buffer overflows in WebGate eDVR Manager and Control Center software. Remote attackers can execute arbitrary code by sending specially crafted packets to the TCPDiscover or TCPDiscover2 functions. Organizations using WebGate eDVR Manager or Control Center for video surveillance systems are affected.
💻 Affected Systems
- WebGate eDVR Manager
- WebGate Control Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, allowing attackers to take full control of affected systems, install malware, pivot to other network resources, and potentially disrupt surveillance operations.
Likely Case
Remote code execution leading to surveillance system compromise, data exfiltration, or ransomware deployment on vulnerable DVR/NVR systems.
If Mitigated
Limited impact if systems are properly segmented, network access is restricted, and intrusion detection is in place to block exploitation attempts.
🎯 Exploit Status
Buffer overflow vulnerabilities in network services typically have low exploitation complexity. Multiple ZDI advisories suggest weaponization is likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in CVE, but updates released around 2015
Vendor Advisory: Not available in public sources
Restart Required: Yes
Instructions:
1. Contact WebGate for updated software versions. 2. Download and install the latest version of eDVR Manager/Control Center. 3. Restart affected systems. 4. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allIsolate surveillance systems from general network and internet access
Firewall Rules
windowsBlock inbound traffic to affected services on vulnerable ports
netsh advfirewall firewall add rule name="Block WebGate Discovery" dir=in action=block protocol=TCP localport=[PORT]
🧯 If You Can't Patch
- Segment surveillance network completely from corporate network
- Implement strict firewall rules to block all external access to affected systems
🔍 How to Verify
Check if Vulnerable:
Check installed software for WebGate eDVR Manager or Control Center versions from before 2015Check Version:
Check program files or control panel for WebGate software version informationVerify Fix Applied:
Verify software has been updated to post-2015 versions and test that discovery functions are no longer accessible from untrusted networks📡 Detection & Monitoring
Log Indicators:
- Unusual network connections to surveillance system ports
- Failed authentication attempts on surveillance systems
- Unexpected process creation on DVR/NVR systems
Network Indicators:
- Unusual traffic patterns to TCP ports used by WebGate discovery services
- Malformed packets targeting WESPDiscovery control
SIEM Query:
source_ip="external" AND dest_port="[WebGate_port]" AND protocol="TCP" AND packet_size>threshold