CVE-2018-14558 : Security Advisory and Response

A vulnerability has been found in Tenda AC7, AC9, and AC10 devices allowing attackers to run arbitrary commands in the operating system.

Understanding CVE-2018-14558

What is CVE-2018-14558?

This CVE identifies a command injection flaw in Tenda AC7, AC9, and AC10 devices' firmware versions.

The Impact of CVE-2018-14558

The vulnerability enables attackers to execute arbitrary commands through a crafted request, potentially compromising the device's security.

Technical Details of CVE-2018-14558

Vulnerability Description

The flaw exists in the "formsetUsbUnload" function, allowing attackers to exploit the dosystemCmd function with untrusted input.

Affected Systems and Versions

Tenda AC7 devices with firmware up to V15.03.06.44_CN(AC7)
Tenda AC9 devices with firmware up to V15.03.05.19(6318)_CN(AC9)
Tenda AC10 devices with firmware up to V15.03.06.23_CN(AC10)

Exploitation Mechanism

Attackers can leverage a crafted goform/setUsbUnload request to execute arbitrary OS commands.

Mitigation and Prevention

Immediate Steps to Take

Update the firmware to the latest version provided by Tenda.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches.
Implement network segmentation to isolate IoT devices.
Conduct security audits and penetration testing.

Patching and Updates

Apply patches and updates released by Tenda to address the vulnerability.