CVE-2024-10434
📋 TL;DR
A critical stack-based buffer overflow vulnerability in Tenda AC1206 routers allows remote attackers to execute arbitrary code by manipulating the 'arg' parameter in the ate_Tenda_mfg_check_usb/ate_Tenda_mfg_check_usb3 functions. This affects Tenda AC1206 routers with firmware up to October 27, 2024. Attackers can exploit this without authentication to potentially take full control of affected devices.
💻 Affected Systems
- Tenda AC1206
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, creation of persistent backdoors, lateral movement to internal networks, and botnet recruitment.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept network 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 prevents lateral movement.
🎯 Exploit Status
Exploit details have been publicly disclosed on GitHub, making weaponization straightforward for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download the latest firmware for AC1206. 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
Block Access to Vulnerable Endpoint
linuxUse firewall rules to block external access to /goform/ate endpoint
iptables -A INPUT -p tcp --dport 80 -m string --string "/goform/ate" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/goform/ate" --algo bm -j DROP
Disable Remote Management
allTurn off remote administration features to prevent external exploitation
🧯 If You Can't Patch
- Move affected routers behind a firewall with strict inbound filtering rules
- Segment router management interfaces to isolated VLANs with access controls
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or System Tools. If version date is 20241027 or earlier, device is vulnerable.Check Version:
curl -s http://router-ip/goform/getStatus | grep -i version || Check web interface manuallyVerify Fix Applied:
Verify firmware version shows a date after 20241027 and attempt to access /goform/ate endpoint returns error or is inaccessible.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/ate with long parameter values
- Multiple failed buffer overflow attempts in system logs
- Unexpected process crashes or reboots
Network Indicators:
- Traffic patterns showing exploitation attempts to router management interfaces
- Unusual outbound connections from router to unknown IPs
SIEM Query:
source="router_logs" AND (uri="/goform/ate" OR uri="*ate*") AND (method=POST OR method=GET) AND (bytes>1000 OR contains(arg, "AAAAAAAA"))