CVE-2024-30624
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1205 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the saveParentControlInfo function. The vulnerability affects Tenda FH1205 routers running firmware version 2.0.0.7(775). Attackers can potentially gain full control of affected devices.
💻 Affected Systems
- Tenda FH1205
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, allowing attackers to intercept network traffic, install malware, or pivot to internal networks.
Likely Case
Remote code execution resulting in device takeover, enabling 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 proof-of-concept available in GitHub repository. Exploitation appears straightforward based on available documentation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for FH1205
3. Access router admin interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router after update
🔧 Temporary Workarounds
Disable Parent Control Feature
allDisable the vulnerable parent control functionality if not needed
Network Segmentation
allIsolate affected routers from critical network segments
🧯 If You Can't Patch
- Place routers behind firewalls with strict inbound filtering
- Disable remote administration and WAN-side management interfaces
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 2.0.0.7(775), device is vulnerable.Check Version:
Check router web interface or use nmap/router scanning tools to identify firmware versionVerify Fix Applied:
Verify firmware version has been updated to a version later than 2.0.0.7(775)📡 Detection & Monitoring
Log Indicators:
- Unusual requests to saveParentControlInfo endpoint
- Multiple failed authentication attempts
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting device compromise
- Port scanning originating from router
SIEM Query:
source_ip=router_ip AND (uri CONTAINS 'saveParentControlInfo' OR status_code=500)