CVE-2024-32301
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda AC7V1.0 routers via the PPW parameter in the fromWizardHandle function. Attackers can exploit this to execute arbitrary code or crash the device. Users running affected firmware versions are at risk.
💻 Affected Systems
- Tenda AC7V1.0 router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, and persistent backdoor installation.
Likely Case
Device crash causing denial of service, potentially requiring physical reset.
If Mitigated
Limited impact if network segmentation isolates the device and external access is restricted.
🎯 Exploit Status
Exploitation details are publicly documented in GitHub repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check Tenda's official website for firmware updates. If available, download and flash the latest firmware via the router's web interface.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to the router's web interface.
Access router settings via web interface, navigate to Remote Management or similar, disable it.
Network segmentation
allIsolate the router on a separate VLAN to limit lateral movement.
Configure VLANs on your network switch to segregate IoT devices.
🧯 If You Can't Patch
- Replace the router with a model from a vendor that provides security updates.
- Implement strict firewall rules to block all inbound traffic to the router's management interface.
🔍 How to Verify
Check if Vulnerable:
Check the firmware version in the router's web interface under System Status or similar.Check Version:
Log into the router's web interface and navigate to the firmware information page.Verify Fix Applied:
Verify the firmware version has been updated to a version later than v15.03.06.44.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to wizard-related endpoints with large PPW parameters.
- Router crash logs or reboot events.
Network Indicators:
- Unexpected traffic spikes to the router's management port (typically 80/443).
- Outbound connections from the router to unknown IPs post-exploit.
SIEM Query:
source="router_logs" AND (uri="/fromWizardHandle" OR message="PPW")