CVE-2024-57581
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda AC18 routers by exploiting a stack overflow in the firewall configuration function. Attackers can gain full control of affected devices, potentially compromising network security. All users running the vulnerable firmware version are affected.
💻 Affected Systems
- Tenda AC18
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, network traffic interception, credential theft, 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
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public GitHub repository contains proof-of-concept code. The vulnerability requires no authentication and has a simple exploitation path.
🛠️ 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. If available, download the latest firmware. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router administration interface
Network segmentation
allIsolate router management interface to trusted network segments only
🧯 If You Can't Patch
- Replace affected routers with different models or brands
- Implement strict network access controls to limit exposure to router management interfaces
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is exactly V15.03.05.19, device is vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Upgrade sectionVerify Fix Applied:
Verify firmware version has changed from V15.03.05.19 to a newer version after patching.📡 Detection & Monitoring
Log Indicators:
- Unusual firewall configuration changes
- Multiple failed login attempts to router admin
- Unexpected firmware modification attempts
Network Indicators:
- Unusual outbound connections from router
- Traffic to known malicious IPs from router
- Port scanning originating from router
SIEM Query:
source_ip=router_ip AND (event_type="firewall_config_change" OR event_type="firmware_update")