CVE-2023-4415
📋 TL;DR
CVE-2023-4415 is an authentication bypass vulnerability in Ruijie RG-EW1200G wireless access points that allows attackers to gain unauthorized access to the device's management interface. Attackers can exploit this remotely without valid credentials, potentially compromising network security. Organizations using affected Ruijie RG-EW1200G devices are at risk.
💻 Affected Systems
- Ruijie RG-EW1200G
📦 What is this software?
Rg Ew1200g Firmware by Ruijienetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the wireless access point, allowing attackers to reconfigure network settings, intercept traffic, pivot to internal networks, and potentially install persistent backdoors.
Likely Case
Unauthorized administrative access to the device, enabling attackers to modify network configurations, disrupt services, and potentially access connected devices.
If Mitigated
Limited impact with proper network segmentation and access controls preventing lateral movement even if the device is compromised.
🎯 Exploit Status
Exploit code is publicly available on GitHub, making this easily weaponizable. The vulnerability requires no authentication and has simple exploitation steps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available - vendor did not respond to disclosure
Restart Required: No
Instructions:
No official patch available. Monitor Ruijie's security advisories for updates. Consider workarounds or replacement if no patch becomes available.
🔧 Temporary Workarounds
Network Access Control
allRestrict access to the management interface using firewall rules or network segmentation
Management Interface Isolation
allPlace the management interface on a separate VLAN with strict access controls
🧯 If You Can't Patch
- Replace affected devices with patched or different vendor equipment
- Implement strict network segmentation to isolate affected devices from critical network segments
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If version is 07161417 r483, the device is vulnerable. Test by attempting to access /api/sys/login endpoint with exploit payload.Check Version:
Check via web interface at System Status or via CLI with 'show version' commandVerify Fix Applied:
No official fix available to verify. If vendor releases patch, verify firmware version is updated beyond 07161417 r483.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts to /api/sys/login
- Multiple failed login attempts followed by successful access
- Configuration changes from unexpected IP addresses
Network Indicators:
- Unusual traffic patterns to device management interface
- Requests to /api/sys/login with malformed parameters
- Administrative access from unexpected network locations
SIEM Query:
source="ruijie-firewall" AND (uri="/api/sys/login" OR (event_type="authentication" AND result="success" AND source_ip NOT IN allowed_admin_ips))