CVE-2016-3150 in ClickShare CSC-1
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in wallpaper.php in the Base Unit in Barco ClickShare CSC-1 devices with firmware before 01.09.03, CSM-1 devices with firmware before 01.06.02, and CSE-200 devices with firmware before 01.03.02 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 05/13/2026
The identified vulnerability represents a classic Cross-Site Scripting (XSS) flaw located within the wallpaper.php component of Barco ClickShare hardware units, specifically affecting Base Unit models CSC-1 with firmware versions prior to 01.09.03, CSM-1 devices running firmware earlier than 01.06.02, and CSE-200 appliances operating on software before version 01.03.02. This security defect arises from insufficient input validation or sanitization mechanisms within the web server interface that processes user-supplied data for setting background images or display configurations. Because the application fails to properly neutralize special characters often used in HTML and JavaScript syntax, an attacker can craft malicious payloads containing arbitrary scripts or markup elements that are subsequently rendered by the victim's browser without adequate filtering.
From a technical perspective, this vulnerability falls under the category of Stored Cross-Site Scripting if the injected content is saved on the server and served to other users, or Reflected XSS if it requires immediate user interaction with a crafted link. The core issue lies in the lack of context-aware encoding when outputting data back into HTML documents. According to industry standards such as CWE-79, this flaw permits attackers to execute scripts in the context of the vulnerable website's domain. This bypasses same-origin policies that normally restrict web pages from interacting with content on other sites, thereby allowing the malicious script to access sensitive cookies, session tokens, or local storage data associated with the authenticated user interface of the ClickShare device management portal.
The operational impact of this vulnerability is significant for organizations relying on Barco ClickShare systems for secure wireless presentation and collaboration in corporate environments. An attacker who successfully exploits this flaw can perform actions such as stealing administrative credentials stored in browser cookies, hijacking active sessions to gain unauthorized control over conference room displays, or redirecting users to phishing sites that mimic the legitimate management interface. In a worst-case scenario where the vulnerability allows for persistent storage of malicious scripts, every administrator accessing the device's web console could be compromised without any direct interaction from them beyond visiting the affected page. This undermines the integrity and confidentiality of the collaboration infrastructure, potentially leading to data leakage or disruption of business operations in meeting rooms.
To mitigate this risk, organizations must prioritize immediate firmware updates for all affected devices. Specifically, administrators should upgrade CSC-1 units to version 01.09.03 or later, CSM-1 devices to 01.06.02 or higher, and CSE-200 appliances to 01.03.02 or newer versions where these input validation issues have been resolved by the vendor. In environments where immediate patching is not feasible due to operational constraints, network-level controls such as Web Application Firewalls can be configured to detect and block common XSS payload patterns targeting the wallpaper.php endpoint. Additionally, implementing strict Content Security Policy headers on the device's web interface can help mitigate the impact of any successful injection by restricting the sources from which scripts are allowed to execute, thereby reducing the effectiveness of client-side attacks even if the underlying code flaw remains unpatched temporarily.