CVE-2019-10658 : Security Advisory and Response

Grandstream GWN7610 devices with firmware versions earlier than 1.0.8.18 are susceptible to remote code execution by authenticated users through a specific API call.

Understanding CVE-2019-10658

Devices with vulnerable firmware versions can be exploited by authenticated users to execute arbitrary code.

What is CVE-2019-10658?

The vulnerability in Grandstream GWN7610 devices allows authenticated users to run malicious code by manipulating the filename parameter in a particular API call.

The Impact of CVE-2019-10658

This vulnerability enables attackers to execute unauthorized commands on affected devices, potentially leading to a complete compromise of the system.

Technical Details of CVE-2019-10658

Grandstream GWN7610 devices are affected by a remote code execution vulnerability due to improper input validation.

Vulnerability Description

The flaw arises from shell metacharacters in the filename parameter of the /ubus/controller.icc.update_nds_webroot_from_tmp update_nds_webroot_from_tmp API call.

Affected Systems and Versions

Product: Grandstream GWN7610
Versions Affected: Firmware versions earlier than 1.0.8.18

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting malicious shell metacharacters in the filename parameter of the mentioned API call.

Mitigation and Prevention

Immediate action is crucial to prevent exploitation and secure the affected devices.

Immediate Steps to Take

Update the Grandstream GWN7610 firmware to version 1.0.8.18 or later.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit device logs for any suspicious activities.
Conduct security training for users to recognize and report potential security threats.
Employ network segmentation to isolate critical devices from potential attacks.

Patching and Updates

Apply security patches and updates provided by Grandstream to address this vulnerability.