CVE-2022-34599
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on H3C Magic R200 routers via a stack overflow in the EdittriggerList interface. Attackers can exploit this without authentication to gain full control of affected devices. Only H3C Magic R200 routers running specific vulnerable firmware versions are affected.
💻 Affected Systems
- H3C Magic R200
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, lateral movement to internal networks, and use as botnet nodes.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or use the device for DDoS attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept code exists in GitHub repositories, making exploitation straightforward for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: Yes
Instructions:
1. Check H3C official website for firmware updates
2. Download latest firmware for Magic R200
3. Access router web interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router after update
🔧 Temporary Workarounds
Disable Web Management Interface
allDisable the vulnerable web interface to prevent remote exploitation
Access router CLI via SSH/Telnet
Enter configuration mode
Disable web management service
Restrict Management Access
allLimit access to router management interface to trusted IPs only
Configure firewall rules to restrict access to router IP on ports 80/443
Allow only specific management IP addresses
🧯 If You Can't Patch
- Isolate affected routers in separate VLAN with strict firewall rules
- Implement network monitoring for exploitation attempts and unusual traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at System Status > Firmware Version or via CLI command 'display version'Check Version:
display versionVerify Fix Applied:
Verify firmware version has been updated to a version newer than R200V200R004L02📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/aspForm with EdittriggerList parameter
- Multiple failed exploitation attempts
- Sudden configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting device compromise
- Exploitation attempts targeting router IP
SIEM Query:
source_ip="router_ip" AND (url_path="/goform/aspForm" OR http_method="POST" AND user_agent_contains="exploit")