CVE-2021-47731
📋 TL;DR
Selea Targa IP OCR-ANPR cameras contain a hidden developer backdoor page accessible with hard-coded credentials 'Selea781830'. This allows attackers to upload malicious configuration files and overwrite device settings. All users of affected Selea camera models are vulnerable.
💻 Affected Systems
- Selea Targa IP OCR-ANPR Camera
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover enabling camera manipulation, disabling security features, installing persistent malware, or using the device as an internal network pivot point.
Likely Case
Unauthorized configuration changes, camera functionality disruption, credential harvesting, or integration of the device into a botnet.
If Mitigated
Limited impact due to network segmentation and access controls preventing external access to camera management interfaces.
🎯 Exploit Status
Exploit requires knowledge of hidden endpoint URL and hard-coded password. Public exploit code demonstrates configuration upload.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.selea.com
Restart Required: No
Instructions:
Contact Selea support for firmware updates. No official patch details are publicly documented.
🔧 Temporary Workarounds
Network Segmentation
allIsolate cameras on separate VLAN without internet access
Access Control Lists
linuxBlock external access to camera management interfaces
iptables -A INPUT -p tcp --dport 80 -s ! trusted_network -j DROP
iptables -A INPUT -p tcp --dport 443 -s ! trusted_network -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate cameras from critical networks
- Monitor for configuration upload attempts and unauthorized access to camera management interfaces
🔍 How to Verify
Check if Vulnerable:
Attempt to access hidden developer endpoint with hard-coded password 'Selea781830'Check Version:
Check camera web interface or contact Selea supportVerify Fix Applied:
Verify firmware version against vendor-provided patched version and test that hidden endpoint no longer accepts hard-coded credentials📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts with 'Selea781830'
- Configuration file uploads via unusual endpoints
- Unusual configuration changes
Network Indicators:
- HTTP POST requests to undocumented endpoints
- Traffic to camera management ports from unauthorized sources
SIEM Query:
source="camera_logs" AND (password="Selea781830" OR endpoint="*developer*" OR action="config_upload")