CVE-2024-44556
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda AX1806 routers via a stack overflow in the setIptvInfo function. Attackers can exploit this by sending specially crafted requests to the vulnerable parameter, potentially gaining full control of affected devices. All users running the vulnerable firmware version are affected.
💻 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, lateral movement to other devices, and botnet recruitment.
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 prevents lateral movement.
🎯 Exploit Status
The detailed technical analysis includes proof-of-concept details, making exploitation straightforward for attackers with basic skills.
🛠️ 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. Download the latest firmware for AX1806. 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
allPrevent external access to the router's web interface
Log into router admin > System Tools > Remote Management > Disable
Restrict admin interface access
allLimit which IP addresses can access the router's admin interface
Log into router admin > Security > Access Control > Set allowed IP ranges
🧯 If You Can't Patch
- Isolate affected routers in a separate VLAN with strict firewall rules
- Implement network monitoring for unusual traffic patterns from routers
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System Tools > Firmware UpgradeCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer v1.0.0.1 and test if the adv.iptv.stballvlans parameter accepts malformed input📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/setIptvInfo
- Multiple failed login attempts followed by iptv configuration changes
- Router reboot events after iptv configuration
Network Indicators:
- Unusual outbound connections from router IP
- Traffic spikes from router to unknown external IPs
- DNS queries to suspicious domains from router
SIEM Query:
source="router_logs" AND (uri="/goform/setIptvInfo" OR parameter="adv.iptv.stballvlans")