CVE-2018-18930 : What You Need to Know

Version 7.0.4.104 of the digital signage product called Tightrope Media Carousel has a vulnerability that allows an attacker to upload arbitrary files through the Manage Bulletins/Upload feature, leading to remote code execution.

Understanding CVE-2018-18930

This CVE involves an arbitrary file upload vulnerability in Tightrope Media Carousel, enabling attackers to execute code remotely.

What is CVE-2018-18930?

The vulnerability in Tightrope Media Carousel version 7.0.4.104 allows attackers to upload specially crafted ZIP files to execute code remotely.

The Impact of CVE-2018-18930

Attackers can upload malicious files through the Manage Bulletins/Upload feature
Remote code execution is possible after uploading a crafted ZIP file
An attacker can gain authentication and execute code within the system

Technical Details of CVE-2018-18930

This section provides more technical insights into the vulnerability.

Vulnerability Description

Attackers can upload a ZIP file with a malicious file based on a backup of existing "Bulletins"
The system extracts all files to a new directory with a random GUID as the name
By previewing an image from the uploaded Bulletin, the attacker can determine the GUID
Remote code execution is achieved by navigating to the malicious file and executing it

Affected Systems and Versions

Product: Tightrope Media Carousel
Version: 7.0.4.104

Exploitation Mechanism

Uploading a specially crafted ZIP file containing a malicious file
System only verifies the presence of required files within the ZIP
Attacker can execute code by navigating to the extracted malicious file

Mitigation and Prevention

Protect your systems from this vulnerability with the following steps:

Immediate Steps to Take

Disable the Manage Bulletins/Upload feature if not essential
Implement strict file upload validation mechanisms
Regularly monitor and audit file uploads and system directories

Long-Term Security Practices

Conduct regular security training for system administrators
Keep software and systems up to date with the latest security patches

Patching and Updates

Apply patches and updates provided by Tightrope Media Carousel to address this vulnerability