CVE-2024-28383
📋 TL;DR
This vulnerability is a stack overflow in Tenda AX12 routers that allows remote attackers to execute arbitrary code by sending a specially crafted SSID parameter. It affects Tenda AX12 v1.0 routers running firmware version 22.03.01.16. Attackers can exploit this without authentication to potentially take full control of affected routers.
💻 Affected Systems
- Tenda AX12 v1.0
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, allowing attackers to intercept traffic, modify DNS settings, install malware, or use the router as a pivot point into internal networks.
Likely Case
Router compromise leading to man-in-the-middle attacks, credential theft, and network disruption for affected users.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering, though internal network compromise remains possible.
🎯 Exploit Status
Public GitHub repository contains analysis and likely exploit code. The vulnerability requires no authentication and has low exploitation complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download the latest firmware for AX12 v1.0. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevents external attackers from accessing the vulnerable interface
Log into router admin interface and disable 'Remote Management' or 'Web Management from WAN'
Network Segmentation
allIsolate router management interface from untrusted networks
Configure firewall rules to block external access to router management ports (typically 80/443)
🧯 If You Can't Patch
- Replace affected routers with different models that are not vulnerable
- Place routers behind dedicated firewalls with strict inbound filtering rules
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or System ToolsCheck Version:
Log into router web interface and check System Status pageVerify Fix Applied:
Verify firmware version is newer than v22.03.01.16 after update📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to router management interface with long SSID parameters
- Multiple failed login attempts followed by exploitation attempts
Network Indicators:
- External IP addresses accessing router management ports
- Unusual outbound traffic from router to unknown destinations
SIEM Query:
source_ip=EXTERNAL AND dest_port IN (80,443) AND http_method=POST AND uri_contains="set" AND param_length>1000