CVE-2023-26800
📋 TL;DR
This CVE describes a command injection vulnerability in Ruijie Networks RG-EW1200 wireless routers that allows attackers to execute arbitrary commands on the device. The vulnerability exists in the upgradeConfirm function via the params.path parameter, affecting organizations using these routers. Attackers can potentially gain full control of affected devices.
💻 Affected Systems
- Ruijie Networks RG-EW1200 Wireless Router
📦 What is this software?
Rg Ew1200 Firmware by Ruijienetworks
Rg Ew1200g Pro Firmware by Ruijienetworks
Rg Ew1200r Firmware by Ruijienetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router leading to network takeover, data interception, lateral movement into internal networks, and persistent backdoor installation.
Likely Case
Router compromise allowing traffic interception, credential theft, and use as pivot point for further attacks.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Command injection vulnerabilities are typically easy to exploit with publicly available proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check Ruijie Networks official website for security advisories. 2. If patch available, download firmware update. 3. Upload firmware via web interface. 4. Apply update and reboot router.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected routers in separate VLANs with strict firewall rules.
Access Control
allRestrict management interface access to trusted IP addresses only.
🧯 If You Can't Patch
- Replace affected routers with patched or different models
- Implement strict network monitoring and anomaly detection
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at System Status > Firmware VersionCheck Version:
Not applicable - use web interfaceVerify Fix Applied:
Verify firmware version is updated beyond EW_3.0(1)B11P204📡 Detection & Monitoring
Log Indicators:
- Unusual upgrade attempts
- Unexpected command execution in system logs
- Multiple failed authentication attempts
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting command and control
SIEM Query:
source="router_logs" AND ("upgradeConfirm" OR "params.path" OR suspicious_command_patterns)