Vulnerabilities

The Tightrope Media Carousel digital signage product 7.0.4.104 contains an arbitrary file upload vulnerability in the Manage Bulletins/Upload feature, which can be leveraged to gain remote code execution. An authenticated attacker can upload a crafted ZIP file (based on an exported backup of existing "Bulletins") containing a malicious file. When uploaded, the system only checks for the presence of the needed files within the ZIP and, as long as the malicious file is named properly, will extract all contained files to a new directory on the system, named with a random GUID. The attacker can determine this GUID by previewing an image from the uploaded Bulletin within the web UI. Once the GUID is determined, the attacker can navigate to the malicious file and execute it. In testing, an ASPX web shell was uploaded, allowing for remote-code execution in the context of a restricted IIS user.

The Tightrope Media Carousel Seneca HDn Windows-based appliance 7.0.4.104 is shipped with a default local administrator username and password. This can be found by a limited user account in an "unattend.xml" file left over on the C: drive from the Sysprep process. An attacker with this username and password can leverage it to gain administrator-level access on the system.

The fetch API in Tightrope Media Carousel before 7.1.3 has CarouselAPI/v0/fetch?url= SSRF. This has two potential areas for abuse. First, a specially crafted URL could be used in a phishing attack to hijack the trust the user and the browser have with the website and could serve malicious content from a third-party attacker-controlled system. Second, arguably more severe, is the potential for an attacker to circumvent firewall controls, by proxying traffic, unauthenticated, into the internal network from the internet.

A Local File Inclusion (LFI) vulnerability exists in the Web Interface API of TightRope Media Carousel Digital Signage before 7.3.5. The RenderingFetch API allows for the downloading of arbitrary files through the use of directory traversal sequences, aka CSL-1683.