Horizon Alert
Summary of the vulnerability and why it matters
A command injection vulnerability in Tenda AC18 routers allows unauthorized access to execute arbitrary system commands. This is a significant concern because it can lead to a complete compromise of the affected device.
- Attackers can gain full control.
- This impacts network security.
- It is reachable from the internet.
Attack Path
How an attacker could exploit the issue
Attackers can exploit this vulnerability by sending a specially crafted request to the `/goform/SetSambaCfg` interface on a Tenda AC18 router. This allows them to inject and execute arbitrary system commands on the device. This could lead to full compromise of the router, enabling further network intrusion or disruption.
- No authentication required.
- Target: `/goform/SetSambaCfg` interface.
- Attacker sends malicious request.
Live Threat
Current exploitation, exposure, and threat context
Attackers might target this command injection vulnerability in Tenda AC18 firmware because it allows for unauthenticated remote code execution on a network device. Such devices, acting as internet gateways, are attractive targets for establishing botnets or pivoting into internal networks. However, specific exploitation details and wider weaponization are not yet evident.
- No KEV listing observed.
- Exploitation remains unconfirmed.
- Public exploits are not readily available.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Teams should prioritize identifying all Tenda AC18 devices running firmware version 15.03.05.05 due to a critical command injection vulnerability in the `/goform/SetSambaCfg` interface. Given the CVSS score of 9.8 and no reported patches, immediate isolation of affected devices is recommended to prevent potential system compromise.
- Isolate or take affected devices offline.
- Monitor network traffic for exploitation attempts.
- Investigate and implement network segmentation.
