CVE-2024-4124
📋 TL;DR
This critical vulnerability in Tenda W15E routers allows remote attackers to execute arbitrary code via a stack-based buffer overflow in the remote web management function. Attackers can exploit this without authentication to potentially take full control of affected devices. All users of Tenda W15E routers with vulnerable firmware are affected.
💻 Affected Systems
- Tenda W15E
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent backdoor installation, network traffic interception, lateral movement to other devices, and botnet recruitment.
Likely Case
Remote code execution leading to device takeover, credential theft, and use as pivot point for internal network attacks.
If Mitigated
Limited impact if device is behind firewall with no internet exposure and remote management disabled.
🎯 Exploit Status
Public exploit details available on GitHub. The vulnerability requires sending crafted HTTP requests to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor did not respond to disclosure. Consider replacing affected devices or implementing workarounds.
🔧 Temporary Workarounds
Disable Remote Web Management
allTurn off remote administration feature to block the attack vector
Access router admin interface -> Advanced Settings -> System Tools -> Remote Management -> Disable
Network Segmentation
allIsolate router management interface from untrusted networks
Configure firewall rules to block external access to port 80/443 on router IP
🧯 If You Can't Patch
- Replace affected Tenda W15E routers with different models from vendors with better security response
- Implement strict network access controls to limit who can reach the router's management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 15.11.0.14 or similar, assume vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Version pageVerify Fix Applied:
No official fix available to verify. Verify workarounds by testing that remote web management interface is inaccessible.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /goform/SetRemoteWebManage
- Multiple failed authentication attempts followed by buffer overflow patterns
Network Indicators:
- HTTP traffic to router IP on port 80/443 with unusually long remoteIP parameter values
- Traffic patterns matching known exploit payloads
SIEM Query:
source_ip=* dest_ip=[router_ip] http_uri="/goform/SetRemoteWebManage" http_method=POST | search remoteIP=* AND length(remoteIP)>100🔗 References
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formSetRemoteWebManage.md
- https://vuldb.com/?ctiid.261867
- https://vuldb.com/?id.261867
- https://vuldb.com/?submit.317829
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formSetRemoteWebManage.md
- https://vuldb.com/?ctiid.261867
- https://vuldb.com/?id.261867
- https://vuldb.com/?submit.317829
