CVE-2020-27691 Explained : Impact and Mitigation

The Relish (Verve Connect) VH510 device with firmware before 1.0.1.6L0516 allows XSS via URLBlocking Settings, SNMP Settings, and System Log Settings.

Understanding CVE-2020-27691

This CVE involves a vulnerability in the Relish (Verve Connect) VH510 device that enables XSS attacks through specific settings.

What is CVE-2020-27691?

The CVE-2020-27691 vulnerability pertains to the Relish (Verve Connect) VH510 device, where attackers can execute cross-site scripting attacks by exploiting certain settings.

The Impact of CVE-2020-27691

This vulnerability can lead to unauthorized access, data theft, and potential manipulation of the affected device's settings, compromising its security.

Technical Details of CVE-2020-27691

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in the Relish (Verve Connect) VH510 device allows for XSS attacks via URLBlocking Settings, SNMP Settings, and System Log Settings.

Affected Systems and Versions

Affected Systems: Relish (Verve Connect) VH510 device
Vulnerable Versions: Firmware versions before 1.0.1.6L0516

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts through the mentioned settings, potentially gaining unauthorized access to the device.

Mitigation and Prevention

Protecting systems from CVE-2020-27691 is crucial to maintaining security.

Immediate Steps to Take

Update the firmware of the Relish (Verve Connect) VH510 device to version 1.0.1.6L0516 or later.
Disable remote access to the affected settings to prevent unauthorized manipulation.

Long-Term Security Practices

Regularly monitor and audit device settings for any unauthorized changes.
Educate users on safe browsing practices to minimize the risk of XSS attacks.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by the device manufacturer to address vulnerabilities like CVE-2020-27691.