CVE-2024-46048
📋 TL;DR
CVE-2024-46048 is a command injection vulnerability in Tenda FH451 routers that allows remote attackers to execute arbitrary commands on the device. This affects Tenda FH451 v1.0.0.9 routers with the vulnerable formexeCommand function. Attackers can gain complete control of affected routers.
💻 Affected Systems
- Tenda FH451
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise allowing attacker to intercept all network traffic, install persistent malware, pivot to internal networks, and use the router for botnet activities.
Likely Case
Router takeover leading to DNS hijacking, credential theft from network traffic, and use as a foothold for internal network attacks.
If Mitigated
Limited impact if router is isolated behind firewall with no external access and strict network segmentation.
🎯 Exploit Status
Public exploit details available in GitHub repository. Simple HTTP request with command injection payload can trigger exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check Tenda website for firmware updates. If update available: 1. Download latest firmware from Tenda support site 2. Log into router admin interface 3. Navigate to System Tools > Firmware Upgrade 4. Upload and apply new firmware
🔧 Temporary Workarounds
Network Isolation
allPlace router behind firewall with strict inbound rules to block external access to router management interface.
Access Restriction
allConfigure router firewall to only allow management access from specific trusted IP addresses.
🧯 If You Can't Patch
- Replace vulnerable router with different model that receives security updates
- Implement network segmentation to isolate router from critical systems
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 1.0.0.9, device is vulnerable.Check Version:
Check router web interface at http://[router-ip]/goform/getStatus or login to admin panelVerify Fix Applied:
Verify firmware version has been updated to a version later than 1.0.0.9.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to formexeCommand endpoint
- Suspicious command execution in router logs
- Multiple failed login attempts followed by command execution
Network Indicators:
- HTTP requests containing shell metacharacters like ;, |, &, $() to router management interface
- Unexpected outbound connections from router
SIEM Query:
source="router_logs" AND (uri="*formexeCommand*" OR message="*cmd*" OR message="*shell*")