CVE-2023-45480
📋 TL;DR
CVE-2023-45480 is a critical stack-based buffer overflow vulnerability in Tenda AC10 routers. Attackers can exploit this by sending specially crafted requests to the 'src' parameter, potentially allowing remote code execution. This affects users of Tenda AC10 routers running the vulnerable firmware version.
💻 Affected Systems
- Tenda AC10
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote unauthenticated attacker gains full control of the router, enabling network compromise, data interception, and lateral movement into connected devices.
Likely Case
Router becomes part of a botnet, suffers denial of service, or allows attacker to modify network settings and intercept traffic.
If Mitigated
Attack is blocked at network perimeter, limiting impact to router availability with no internal network compromise.
🎯 Exploit Status
Public exploit details available in GitHub repository. Stack overflow vulnerabilities in embedded devices are commonly weaponized.
🛠️ 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 AC10 model
3. Access router admin interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router management interface
Network Segmentation
allIsolate router management interface to trusted network segment
🧯 If You Can't Patch
- Replace vulnerable router with different model/brand
- Implement strict firewall rules blocking all external access to router management ports
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version matches US_AC10V4.0si_V16.03.10.13_cn, device is vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Version page.Verify Fix Applied:
Verify firmware version has changed from vulnerable version after update.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to router management interface
- Multiple failed login attempts followed by buffer overflow patterns
Network Indicators:
- Unusual traffic to router management ports (typically 80/443)
- Exploit pattern matches in network traffic
SIEM Query:
source_ip=external AND dest_port=80 AND http_uri CONTAINS 'src' AND payload_size>threshold