CVE-2021-37123
📋 TL;DR
This vulnerability allows attackers to bypass authentication in Hero-CT060 devices and perform unauthorized operations. It affects all Hero-CT060 devices running versions before 1.0.0.200. The vulnerability stems from insufficient identity validation when users attempt certain operations.
💻 Affected Systems
- Hero-CT060
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to perform any operation normally restricted to authenticated users, potentially leading to data theft, system manipulation, or service disruption.
Likely Case
Unauthorized access to administrative functions, configuration changes, or sensitive data access that should require authentication.
If Mitigated
Limited impact with proper network segmentation and access controls, though authentication bypass remains possible.
🎯 Exploit Status
The vulnerability allows unauthenticated exploitation with low complexity due to improper authentication validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.0.200 or later
Vendor Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210929-01-auth-en
Restart Required: Yes
Instructions:
1. Download firmware version 1.0.0.200 or later from Huawei support portal. 2. Backup current configuration. 3. Upload and apply the new firmware. 4. Reboot the device. 5. Verify the update was successful.
🔧 Temporary Workarounds
Network segmentation
allIsolate Hero-CT060 devices from untrusted networks and restrict access to authorized IP addresses only.
Access control lists
allImplement strict firewall rules to limit which systems can communicate with Hero-CT060 devices.
🧯 If You Can't Patch
- Segment the device on a dedicated VLAN with strict access controls
- Monitor all traffic to/from the device for suspicious authentication bypass attempts
🔍 How to Verify
Check if Vulnerable:
Check the device firmware version via web interface or CLI. If version is below 1.0.0.200, the device is vulnerable.Check Version:
Check via device web interface or use manufacturer-specific CLI commands for version verification.Verify Fix Applied:
After patching, verify the firmware version shows 1.0.0.200 or higher and test that authentication is properly required for all operations.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful operations
- Authentication bypass patterns in access logs
- Unauthorized configuration changes
Network Indicators:
- Unusual traffic patterns to administrative interfaces
- Requests to sensitive endpoints without authentication headers
SIEM Query:
source="hero-ct060" AND (event_type="auth_bypass" OR (auth_result="success" AND auth_method="none"))