CVE-2021-26614
📋 TL;DR
CVE-2021-26614 is a remote code execution vulnerability in IpTime C200 IP cameras. Attackers can send specially crafted parameters to the ius_get.cgi web service interface to execute arbitrary shell commands. This affects all users of vulnerable IpTime C200 cameras.
💻 Affected Systems
- IpTime C200 IP Camera
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the camera system, installation of persistent malware, lateral movement to other network devices, and use as a botnet node.
Likely Case
Camera compromise leading to video surveillance disruption, credential theft, and use as an initial access point for network attacks.
If Mitigated
Limited impact if cameras are isolated on separate VLANs with strict firewall rules and network segmentation.
🎯 Exploit Status
The vulnerability requires no authentication and has publicly available proof-of-concept code, making exploitation trivial for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version addressing CVE-2021-26614 (specific version number not publicly documented)
Vendor Advisory: https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36346
Restart Required: Yes
Instructions:
1. Log into camera web interface. 2. Navigate to firmware update section. 3. Download latest firmware from IpTime website. 4. Upload and apply firmware update. 5. Camera will automatically restart.
🔧 Temporary Workarounds
Network Isolation
allPlace cameras on isolated VLAN with strict firewall rules blocking all inbound traffic except from authorized management systems.
Web Interface Restriction
allConfigure firewall to block external access to camera web interface (typically port 80/443).
🧯 If You Can't Patch
- Immediately isolate affected cameras from internet and critical network segments
- Implement strict network access controls allowing only necessary traffic to/from cameras
🔍 How to Verify
Check if Vulnerable:
Check if camera responds to crafted requests to /ius_get.cgi with shell command injection. Use vulnerability scanners or test with controlled payloads.Check Version:
Log into camera web interface and check firmware version in system information page.Verify Fix Applied:
After firmware update, attempt exploitation with known payloads. Verify ius_get.cgi endpoint no longer executes arbitrary commands.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /ius_get.cgi
- Suspicious command strings in web logs
- Multiple failed login attempts followed by successful access
Network Indicators:
- Unusual outbound connections from camera
- Traffic to known malicious IPs
- Unexpected port scans originating from camera
SIEM Query:
source="camera_logs" AND (uri="/ius_get.cgi" AND (cmd="*" OR param="*")) OR (process="sh" OR process="bash" FROM device_type="camera")