CVE-2024-35578
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda AX1806 routers via a stack overflow in the formSetIptv function. Attackers can exploit this by sending specially crafted requests to the adv.iptv.stballvlans parameter. All users of affected Tenda AX1806 routers are at risk.
💻 Affected Systems
- Tenda AX1806
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, and lateral movement to other devices on the network.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or use the device as part of a botnet.
If Mitigated
Denial of service or temporary disruption if exploit fails or is detected by security controls.
🎯 Exploit Status
Detailed technical analysis and proof-of-concept available in public references. The vulnerability appears straightforward to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided in references
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download the latest firmware for AX1806. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply the new firmware. 6. Wait for router to restart.
🔧 Temporary Workarounds
Disable remote administration
allPrevent external access to router administration interface
Network segmentation
allIsolate router management interface to trusted network segments only
🧯 If You Can't Patch
- Disable the IPTV feature if not needed
- Implement strict firewall rules to limit access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is v1.0.0.1, device is vulnerable.Check Version:
Log into router web interface and check System Status or Firmware Version page.Verify Fix Applied:
Verify firmware version has been updated to a version later than v1.0.0.1.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to formSetIptv endpoint
- Large payloads sent to adv.iptv.stballvlans parameter
- Router crash or restart logs
Network Indicators:
- HTTP requests with oversized stballvlans parameter values
- Traffic patterns suggesting exploit attempts
SIEM Query:
http.method:POST AND http.uri:*formSetIptv* AND http.param.stballvlans:*