CVE-2024-48825
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Tenda AC7 routers without authentication. Attackers can inject malicious commands through the ate_ifconfig_set function, potentially gaining full control of affected devices. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- Tenda AC7
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent malware, pivot to internal networks, intercept traffic, or join botnets.
Likely Case
Router takeover leading to DNS hijacking, credential theft from network traffic, or denial of service.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access, though LAN attacks remain possible.
🎯 Exploit Status
Proof-of-concept available in GitHub repository. Exploitation requires sending crafted HTTP requests to vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for AC7 model
3. Access router admin interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and install new firmware
6. Reboot router
🔧 Temporary Workarounds
Network Segmentation
allIsolate router on separate VLAN to limit lateral movement
Access Control
linuxRestrict WAN access to router management interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s ! TRUSTED_IP -j DROP
iptables -A INPUT -p tcp --dport 443 -s ! TRUSTED_IP -j DROP
🧯 If You Can't Patch
- Replace vulnerable device with supported model
- Place device behind dedicated firewall with strict ingress filtering
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface at System Status > Firmware VersionCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is newer than v15.03.06.44📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/ate_ifconfig_set
- Command execution patterns in system logs
- Unexpected process creation
Network Indicators:
- HTTP requests with command injection payloads to router IP
- Outbound connections from router to suspicious IPs
SIEM Query:
source="router.log" AND "ate_ifconfig_set" AND ("|" OR ";" OR "`" OR "$")