CVE-2024-7581
📋 TL;DR
This critical vulnerability in Tenda A301 routers allows remote attackers to execute arbitrary code via a stack-based buffer overflow in the WiFi configuration function. Attackers can exploit this without authentication to potentially take full control of affected devices. All users running the vulnerable firmware version are at risk.
💻 Affected Systems
- Tenda A301 Wireless Router
📦 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 device is behind firewall with strict inbound rules, though internal network exposure remains.
🎯 Exploit Status
Public exploit code exists in GitHub repository, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. If update available, download and install via web interface. 3. Factory reset after update. 4. Reconfigure settings securely.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router management interface
Access router web interface -> Advanced -> System Tools -> Remote Management -> Disable
Network Segmentation
allIsolate router management interface to trusted network
🧯 If You Can't Patch
- Replace affected router with different model/brand that receives security updates
- Place router behind dedicated firewall with strict inbound rules blocking all external access to management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface: Login -> Advanced -> System Tools -> Firmware UpgradeCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer 15.13.08.12 and no newer vulnerable version📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/WifiBasicSet
- Multiple failed exploit attempts
- Unexpected configuration changes
Network Indicators:
- HTTP requests with long 'security' parameter values to router IP
- Unusual outbound connections from router
SIEM Query:
source="router_logs" AND (uri="/goform/WifiBasicSet" OR uri="/goform/WifiBasicSet")