CVE-2017-17738 : Security Advisory and Response

BrightSign Digital Signage (4k242) device with Firmware version 6.2.63 and earlier allows file renaming and modifications through the /tools.html interface.

Understanding CVE-2017-17738

This CVE involves a vulnerability in the BrightSign Digital Signage device that enables unauthorized file changes.

What is CVE-2017-17738?

The BrightSign Digital Signage (4k242) device, running Firmware version 6.2.63 and below, permits users to rename and alter files via the /tools.html interface.

The Impact of CVE-2017-17738

This vulnerability could be exploited by attackers to manipulate files on the affected device, potentially leading to unauthorized access or system compromise.

Technical Details of CVE-2017-17738

The following technical details outline the specifics of this CVE.

Vulnerability Description

The vulnerability in the BrightSign Digital Signage device allows unauthorized users to rename and modify files through the /tools.html interface.

Affected Systems and Versions

Affected System: BrightSign Digital Signage (4k242) device
Affected Firmware Versions: 6.2.63 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing the /tools.html interface to rename and make changes to files on the device.

Mitigation and Prevention

To address CVE-2017-17738, consider the following mitigation strategies.

Immediate Steps to Take

Disable access to the /tools.html interface if not essential
Monitor file changes and access logs for suspicious activities

Long-Term Security Practices

Regularly update firmware to the latest version
Implement network segmentation to limit access to critical interfaces

Patching and Updates

Apply patches or firmware updates provided by BrightSign to fix the vulnerability and enhance device security.