CVE-2017-9377 in ClickShare Base Unit
Summary
by MITRE
A command injection was identified on Barco ClickShare Base Unit devices with CSM-1 firmware before 1.7.0.3 and CSC-1 firmware before 1.10.0.10. An attacker with access to the product's web API can exploit this vulnerability to completely compromise the vulnerable device.
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Analysis
by VulDB Data Team • 12/02/2019
The vulnerability identified in CVE-2017-9377 represents a critical command injection flaw affecting Barco ClickShare Base Unit devices, specifically targeting CSM-1 and CSC-1 models running outdated firmware versions. This vulnerability resides within the web API interface of these presentation and collaboration devices, which are widely deployed in enterprise environments for secure meeting room solutions. The flaw allows unauthorized execution of arbitrary commands on the affected devices, fundamentally compromising their security posture and potentially enabling full system control by malicious actors who can access the web API.
The technical nature of this vulnerability stems from insufficient input validation and sanitization within the web API implementation of the ClickShare devices. Attackers can exploit this weakness by crafting malicious API requests that include command injection payloads, which are then executed within the device's operating environment. This type of vulnerability maps directly to CWE-77, which specifically addresses command injection flaws in software systems. The vulnerability exists because the device's firmware fails to properly validate or sanitize user-supplied input parameters before incorporating them into system commands or shell executions, creating an attack surface where malicious code can be interpreted and executed with the privileges of the web API service.
The operational impact of this vulnerability extends far beyond simple device compromise, as it enables attackers to gain complete administrative control over the affected ClickShare units. This level of access allows threat actors to modify device configurations, extract sensitive data, install malicious software, or even use the compromised devices as launch points for further attacks within the network. The implications are particularly severe in enterprise environments where these devices are often connected to internal networks and may have access to sensitive corporate resources. The vulnerability can be exploited remotely, making it especially dangerous as attackers need only access to the web API interface to execute their payloads, potentially allowing for lateral movement attacks against other networked systems.
Organizations should prioritize immediate firmware updates to address this vulnerability, specifically upgrading to CSM-1 firmware version 1.7.0.3 or later and CSC-1 firmware version 1.10.0.10 or later. Network segmentation and access controls should be implemented to limit exposure of the web API interfaces to authorized personnel only, while monitoring systems should be deployed to detect anomalous API access patterns that could indicate exploitation attempts. According to ATT&CK framework, this vulnerability aligns with T1059.001 for command and scripting interpreter and T1068 for exploit for privilege escalation, making it a significant concern for organizations following MITRE ATT&CK methodology for threat analysis and defense planning. The vulnerability also demonstrates the importance of secure coding practices and input validation as outlined in OWASP Top Ten categories, emphasizing that devices in the Internet of Things and collaboration environments require robust security measures to prevent unauthorized access and command execution.