CVE-2018-6414
📋 TL;DR
A buffer overflow vulnerability in Hikvision IP Camera web servers allows remote attackers to execute arbitrary code or crash devices by sending specially crafted messages. This affects certain Hikvision IP Camera models with insufficient input validation. Organizations using vulnerable cameras are at risk of device compromise.
💻 Affected Systems
- Hikvision IP Cameras
📦 What is this software?
Ip Cameras by Hikvision
⚠️ Risk & Real-World Impact
Worst Case
Remote unauthenticated attacker gains full control of the camera, potentially pivoting to internal networks or using the device for further attacks.
Likely Case
Remote code execution leading to camera compromise, surveillance disruption, or device becoming part of a botnet.
If Mitigated
If cameras are behind firewalls with strict inbound rules, risk reduces to internal network compromise only.
🎯 Exploit Status
Buffer overflow vulnerabilities in embedded devices are commonly exploited. Public exploit code exists for similar vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware updates provided by Hikvision
Vendor Advisory: https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification--buffer-overflow-vulnerability-in-some-hik/
Restart Required: Yes
Instructions:
1. Identify affected camera models from Hikvision advisory. 2. Download latest firmware from Hikvision portal. 3. Upload firmware via web interface. 4. Reboot camera after update.
🔧 Temporary Workarounds
Network Segmentation
allPlace cameras in isolated VLAN with strict firewall rules
Access Control
allRestrict camera web interface access to management networks only
🧯 If You Can't Patch
- Isolate cameras from internet and restrict network access
- Implement network monitoring for exploit attempts
🔍 How to Verify
Check if Vulnerable:
Check camera model and firmware version against Hikvision advisory listCheck Version:
Check via camera web interface: System > Device Information > Firmware VersionVerify Fix Applied:
Verify firmware version matches patched version from Hikvision📡 Detection & Monitoring
Log Indicators:
- Web server crash logs
- Unusual HTTP requests to camera web interface
Network Indicators:
- Malformed HTTP requests to camera ports
- Exploit pattern matches in network traffic
SIEM Query:
source="camera_logs" AND (event="crash" OR event="buffer_overflow")