CVE-2023-24093
📋 TL;DR
This critical vulnerability in H3C A210-G wireless access points allows attackers to bypass authentication without requiring any password. Attackers can gain administrative access to affected devices, potentially compromising network security. Organizations using H3C A210-G devices with vulnerable firmware are affected.
💻 Affected Systems
- H3C A210-G wireless access point
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete network compromise where attackers gain administrative control over access points, intercept/manipulate network traffic, pivot to internal networks, and deploy persistent backdoors.
Likely Case
Unauthorized access to network devices allowing configuration changes, traffic monitoring, and potential credential harvesting from connected clients.
If Mitigated
Limited impact if devices are isolated in separate VLANs with strict network segmentation and access controls.
🎯 Exploit Status
The vulnerability is simple to exploit - attackers can authenticate without any password. Public blog posts demonstrate the issue.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not publicly available
Restart Required: No
Instructions:
Check H3C official website for security advisories and firmware updates. Contact H3C support for patching guidance.
🔧 Temporary Workarounds
Network segmentation and isolation
allIsolate affected access points in separate VLANs with strict firewall rules to limit attack surface
Access control restrictions
allImplement strict network access controls to limit who can reach the management interfaces of affected devices
🧯 If You Can't Patch
- Replace affected devices with patched or alternative models
- Implement network monitoring and intrusion detection specifically for authentication bypass attempts on these devices
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If running A210-GV100R005, assume vulnerable.Check Version:
Check via device web interface or use SNMP queries if configuredVerify Fix Applied:
Verify firmware has been updated to a version not listed as vulnerable. Test authentication with invalid credentials to ensure proper access control.📡 Detection & Monitoring
Log Indicators:
- Successful authentication without password entries
- Multiple failed login attempts followed by successful access from same IP
- Configuration changes from unexpected sources
Network Indicators:
- Unauthorized access to management interfaces
- Unexpected configuration changes to access points
- Traffic patterns indicating device compromise
SIEM Query:
source="h3c-a210g" AND (event_type="authentication" AND result="success" AND auth_method="password" AND password_length=0)