CVE-2023-50614
📋 TL;DR
This vulnerability in EBYTE E880-IR01-V1.1 devices allows attackers to retrieve sensitive information, likely including passwords, by sending specially crafted POST requests to the /cgi-bin/luci endpoint. The issue affects users of these specific IoT devices running vulnerable firmware versions. Attackers can exploit this without authentication to access confidential data.
💻 Affected Systems
- EBYTE E880-IR01-V1.1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of device credentials leading to unauthorized access, device takeover, and potential lateral movement within connected networks.
Likely Case
Exposure of administrative credentials allowing attackers to reconfigure devices, intercept communications, or use devices as attack vectors.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external exploitation.
🎯 Exploit Status
Exploitation requires only HTTP POST requests to a specific endpoint. The GitHub reference suggests password disclosure, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check manufacturer website for firmware updates. Consider workarounds or device replacement if no fix is provided.
🔧 Temporary Workarounds
Disable Web Interface
linuxDisable the Luci web management interface if not required for operations
ssh admin@device-ip
uci set uhttpd.main.listen_http=''
uci commit uhttpd
/etc/init.d/uhttpd restart
Network Access Control
linuxRestrict access to device management interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s trusted-network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict access controls
- Implement network monitoring for suspicious POST requests to /cgi-bin/luci
🔍 How to Verify
Check if Vulnerable:
Test by sending POST request to http://device-ip/cgi-bin/luci and checking response for sensitive data disclosureCheck Version:
Check device web interface or use: cat /etc/openwrt_releaseVerify Fix Applied:
After applying workarounds, verify web interface is inaccessible or properly restricted📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /cgi-bin/luci from unusual sources
- Unauthorized access attempts to web interface
Network Indicators:
- HTTP POST requests to /cgi-bin/luci endpoint from external IPs
- Unusual outbound traffic from device after compromise
SIEM Query:
source="device-logs" AND url="/cgi-bin/luci" AND method="POST"