CVE-2019-10662 : Vulnerability Insights and Analysis

Grandstream UCM6204 devices prior to version 1.0.19.20 are vulnerable to remote code execution by authenticated users through specific parameters.

Understanding CVE-2019-10662

Devices running Grandstream UCM6204 firmware versions earlier than 1.0.19.20 are susceptible to a critical security flaw that allows authenticated users to execute arbitrary code.

What is CVE-2019-10662?

The vulnerability in Grandstream UCM6204 devices enables authenticated users to trigger remote code execution by utilizing shell metacharacters in a particular parameter within the /cgi? URI.

The Impact of CVE-2019-10662

This vulnerability poses a severe risk as it allows attackers with authenticated access to execute malicious code on the affected devices, potentially leading to unauthorized system access and data compromise.

Technical Details of CVE-2019-10662

Grandstream UCM6204 devices are affected by a critical security issue that facilitates remote code execution by authenticated users.

Vulnerability Description

The vulnerability arises from improper input validation in the backupUCMConfig file-backup parameter, which can be exploited using shell metacharacters in the /cgi? URI.

Affected Systems and Versions

Product: Grandstream UCM6204
Versions Affected: Prior to 1.0.19.20

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting malicious shell metacharacters in the backupUCMConfig file-backup parameter within the /cgi? URI, allowing them to execute arbitrary code.

Mitigation and Prevention

To address CVE-2019-10662 and enhance overall security posture, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Update Grandstream UCM6204 devices to version 1.0.19.20 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access.
Regularly audit and review device configurations to identify and address security gaps.
Stay informed about security advisories and patches released by Grandstream Networks.

Patching and Updates

Ensure timely installation of security patches and firmware updates provided by Grandstream Networks to address known vulnerabilities and enhance device security.