CVE-2022-27172
📋 TL;DR
CVE-2022-27172 is a hard-coded password vulnerability in InHand Networks InRouter302's console infactory functionality that allows attackers to execute privileged operations via network requests. This affects InRouter302 devices running vulnerable firmware versions, potentially enabling remote code execution. Organizations using these routers for industrial or network infrastructure are at risk.
💻 Affected Systems
- InHand Networks InRouter302
📦 What is this software?
Ir302 Firmware by Inhandnetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing persistent backdoor installation, network traffic interception, lateral movement to connected systems, and disruption of industrial operations.
Likely Case
Unauthorized administrative access leading to configuration changes, service disruption, credential theft, and potential data exfiltration.
If Mitigated
Limited impact with proper network segmentation, but still potential for isolated router compromise.
🎯 Exploit Status
Exploitation requires network access to the router but no authentication; detailed technical analysis available in Talos report.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V3.5.45 or later (check vendor advisory for latest)
Vendor Advisory: https://www.inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdf
Restart Required: Yes
Instructions:
1. Download latest firmware from InHand Networks support portal. 2. Backup current configuration. 3. Upload firmware via web interface or console. 4. Apply update and restart router. 5. Verify firmware version after reboot.
🔧 Temporary Workarounds
Network Segmentation
allIsolate InRouter302 devices from untrusted networks and restrict access to management interfaces.
Access Control Lists
linuxImplement firewall rules to restrict access to router management ports from authorized IPs only.
iptables -A INPUT -p tcp --dport [management_port] -s [trusted_ip] -j ACCEPT
iptables -A INPUT -p tcp --dport [management_port] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable routers from production networks
- Monitor network traffic to/from router management interfaces for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface (System > System Info) or console; versions V3.5.37 or earlier are vulnerable.Check Version:
ssh admin@[router_ip] 'show version' or check web interface at System > System InfoVerify Fix Applied:
Verify firmware version is V3.5.45 or later after patching; test console infactory access with default credentials should fail.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful login
- Unexpected configuration changes
- Console infactory access logs
Network Indicators:
- Unusual network traffic to router management ports from unauthorized sources
- Traffic patterns suggesting credential brute-forcing
SIEM Query:
source="router_logs" (event_type="authentication" AND result="success") AND user="default" OR source="router_logs" event_type="configuration_change"