CVE-2024-57583
📋 TL;DR
This CVE describes a command injection vulnerability in Tenda AC18 routers that allows attackers to execute arbitrary commands on the device. Attackers can exploit this by sending specially crafted input to the usbName parameter in the formSetSambaConf function. This affects users running Tenda AC18 routers with vulnerable firmware.
💻 Affected Systems
- Tenda AC18
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing full remote code execution, credential theft, network pivoting, and persistent backdoor installation.
Likely Case
Remote code execution leading to router compromise, DNS hijacking, credential harvesting, and network surveillance.
If Mitigated
Limited impact if proper network segmentation, firewall rules, and access controls prevent external exploitation.
🎯 Exploit Status
The GitHub reference contains technical details and likely proof-of-concept code. Command injection vulnerabilities are typically easy to exploit once details are public.
🛠️ 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. Download the latest firmware for AC18. 3. Access router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and install the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Disable Samba/USB sharing
allDisable the vulnerable Samba functionality that contains the formSetSambaConf function
Network segmentation
allIsolate the router from critical internal networks and restrict access to admin interface
🧯 If You Can't Patch
- Replace the vulnerable router with a different model or vendor
- Implement strict firewall rules to block all external access to the router's admin interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin interface. If version is exactly V15.03.05.19, the device is vulnerable.Check Version:
Check via router web interface at 192.168.0.1 or 192.168.1.1, or via SSH if enabled: cat /proc/versionVerify Fix Applied:
After updating firmware, verify the version has changed from V15.03.05.19 to a newer version.📡 Detection & Monitoring
Log Indicators:
- Unusual commands in system logs
- Suspicious Samba configuration changes
- Unexpected process execution
Network Indicators:
- Unusual outbound connections from router
- Traffic to unexpected destinations
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (command_injection_indicators OR unusual_samba_activity)