CVE-2017-17737 : Vulnerability Insights and Analysis

BrightSign Digital Signage (4k242) device is vulnerable to cross-site scripting (XSS) through the REF parameter in specific pages.

Understanding CVE-2017-17737

What is CVE-2017-17737?

The BrightSign Digital Signage (4k242) device with Firmware 6.2.63 and earlier versions is susceptible to XSS attacks via the REF parameter in /network_diagnostics.html or /storage_info.html pages.

The Impact of CVE-2017-17737

This vulnerability allows attackers to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2017-17737

Vulnerability Description

The REF parameter in specific pages of the BrightSign Digital Signage (4k242) device allows for the injection of malicious scripts, enabling cross-site scripting attacks.

Affected Systems and Versions

Product: BrightSign Digital Signage (4k242)
Firmware Versions Affected: 6.2.63 and prior

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted scripts into the REF parameter of /network_diagnostics.html or /storage_info.html pages, tricking users into executing the malicious code.

Mitigation and Prevention

Immediate Steps to Take

Disable access to the vulnerable pages if not essential for operations.
Regularly monitor and analyze network traffic for any suspicious activities.
Educate users about the risks of clicking on unverified links or accessing unknown websites.

Long-Term Security Practices

Implement input validation mechanisms to sanitize user inputs and prevent script injections.
Keep systems up to date with the latest firmware and security patches.

Patching and Updates

Ensure that the BrightSign Digital Signage (4k242) devices are updated to the latest firmware version that addresses the XSS vulnerability.