CVE-2024-30620
📋 TL;DR
This vulnerability in Tenda AX1803 routers allows remote attackers to execute arbitrary code via a stack overflow in the serviceName parameter. Attackers can potentially take full control of affected devices. Users running Tenda AX1803 v1.0.0.1 firmware are affected.
💻 Affected Systems
- Tenda AX1803
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, lateral movement to other devices, and participation in botnets.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repositories, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates
2. If update available, download and install via router web interface
3. Reboot router after installation
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router administration interface
Network segmentation
allIsolate router management interface to trusted network segments only
🧯 If You Can't Patch
- Replace affected devices with patched or different models
- Implement strict network access controls to limit exposure to router management interfaces
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface (typically under System or Administration settings)Check Version:
Check via router web interface or SSH if enabled: cat /proc/version or similarVerify Fix Applied:
Verify firmware version is no longer v1.0.0.1 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to router management endpoints
- Multiple failed exploit attempts
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting device compromise
SIEM Query:
source="router_logs" AND (uri="/goform/AdvSetMacMtuWan" OR serviceName parameter with unusual length)🔗 References
- https://github.com/re1wn/IoT_vuln/blob/main/Tenda_AX1803_v1.0.0.1_contains_a_stack_overflow_via_the_serviceName_parameter_in_the_function_fromAdvSetMacMtuWan.md
- https://github.com/re1wn/IoT_vuln/blob/main/Tenda_AX1803_v1.0.0.1_contains_a_stack_overflow_via_the_serviceName_parameter_in_the_function_fromAdvSetMacMtuWan.md
