CVE-2022-27268
📋 TL;DR
CVE-2022-27268 is a remote code execution vulnerability in InHand Networks InRouter 900 Industrial 4G Router that allows attackers to execute arbitrary code via crafted packets to the get_cgi_from_memory component. This affects organizations using these routers in industrial environments before version 1.0.0.r11700. Successful exploitation gives attackers full control of affected devices.
💻 Affected Systems
- InHand Networks InRouter 900 Industrial 4G Router
📦 What is this software?
Inrouter 900 Firmware by Inhandnetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial network infrastructure, allowing attackers to disrupt operations, steal sensitive industrial data, pivot to other systems, or cause physical damage through manipulated industrial processes.
Likely Case
Attackers gain persistent access to router, use it as foothold for network reconnaissance, deploy ransomware or malware, intercept network traffic, or disrupt industrial communications.
If Mitigated
Limited impact with proper network segmentation, but still potential for isolated device compromise requiring replacement.
🎯 Exploit Status
Public exploit details available in referenced GitHub repository; exploitation requires sending crafted packets to vulnerable component.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.0.0.r11700 and later
Vendor Advisory: Not publicly documented in vendor advisory; information primarily from security researchers.
Restart Required: Yes
Instructions:
1. Download latest firmware from InHand Networks support portal. 2. Backup current configuration. 3. Upload firmware via web interface. 4. Apply firmware update. 5. Restart router. 6. Restore configuration if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate InRouter 900 devices in separate VLAN with strict firewall rules limiting inbound access.
Access Control Lists
allImplement ACLs to restrict which IP addresses can communicate with router management interfaces.
🧯 If You Can't Patch
- Replace vulnerable devices with updated hardware running patched firmware
- Implement network monitoring and intrusion detection specifically for these devices
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface (System > Status) or CLI using 'show version' command.Check Version:
show versionVerify Fix Applied:
Confirm firmware version is v1.0.0.r11700 or later in System Status page.📡 Detection & Monitoring
Log Indicators:
- Unusual packet patterns to get_cgi_from_memory component
- Unexpected process execution
- Configuration changes not initiated by administrators
Network Indicators:
- Crafted packets to router on unusual ports
- Unexpected outbound connections from router
- Anomalous traffic patterns from industrial network segments
SIEM Query:
source="inrouter-900" AND (event_type="process_execution" OR packet_pattern="*get_cgi_from_memory*")🔗 References
- https://drive.google.com/drive/folders/1zJ2dGrKar-WTlYz13v1f0BIsoIm3aU0l?usp=sharing
- https://github.com/wu610777031/IoT_Hunter/blob/main/Inhand%20InRouter%20900%20Industrial%204G%20Router%20%20Vulnerabilities%28RCE%29.pdf
- https://drive.google.com/drive/folders/1zJ2dGrKar-WTlYz13v1f0BIsoIm3aU0l?usp=sharing
- https://github.com/wu610777031/IoT_Hunter/blob/main/Inhand%20InRouter%20900%20Industrial%204G%20Router%20%20Vulnerabilities%28RCE%29.pdf
