CVE-2024-2988
📋 TL;DR
A critical stack-based buffer overflow vulnerability in Tenda FH1203 routers allows remote attackers to execute arbitrary code by manipulating the 'entrys' parameter in the fromSetRouteStatic function. This affects Tenda FH1203 firmware version 2.0.1.6. Attackers can exploit this without authentication to potentially take full control of affected devices.
💻 Affected Systems
- Tenda FH1203
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, creation of persistent backdoors, lateral movement to internal networks, and botnet recruitment.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept network traffic, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering, though internal exploitation remains possible.
🎯 Exploit Status
Exploit details are publicly available on GitHub, and the vulnerability requires no authentication, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch is available. Contact Tenda support for firmware updates and monitor their website for security advisories.
🔧 Temporary Workarounds
Network Segmentation and Access Control
allIsolate affected routers in a separate network segment and restrict access to the management interface.
Firewall Rules to Block Exploitation
allImplement firewall rules to block external access to the vulnerable endpoint (/goform/fromRouteStatic).
🧯 If You Can't Patch
- Immediately disconnect affected devices from the internet and place them behind a firewall with strict inbound/outbound rules.
- Replace vulnerable devices with supported models from vendors that provide security updates.
🔍 How to Verify
Check if Vulnerable:
Check the router's firmware version via the web interface at http://[router-ip]/goform/getStatus. If the version is 2.0.1.6, the device is vulnerable.Check Version:
curl -s http://[router-ip]/goform/getStatus | grep -o '"firmwareVersion":"[^"]*"'Verify Fix Applied:
Verify firmware version has been updated to a version later than 2.0.1.6, though no official fix is currently available.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/fromRouteStatic with long 'entrys' parameters
- Router reboot events or configuration changes from unknown sources
Network Indicators:
- Unexpected outbound connections from router to suspicious IPs
- Anomalous traffic patterns indicating possible command and control activity
SIEM Query:
source="router_logs" AND (url="/goform/fromRouteStatic" AND method="POST" AND param_length>1000)🔗 References
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/FH/FH1203/fromSetRouteStatic.md
- https://vuldb.com/?ctiid.258157
- https://vuldb.com/?id.258157
- https://vuldb.com/?submit.301363
- https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/FH/FH1203/fromSetRouteStatic.md
- https://vuldb.com/?ctiid.258157
- https://vuldb.com/?id.258157
- https://vuldb.com/?submit.301363
