CVE-2020-3598 in Vision Dynamic Signage Director
Summary
by MITRE • 10/08/2020
A vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to access confidential information or make configuration changes. The vulnerability is due to missing authentication for a specific section of the web-based management interface. An attacker could exploit this vulnerability by accessing a crafted URL. A successful exploit could allow the attacker to obtain access to a section of the interface, which they could use to read confidential information or make configuration changes.
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Analysis
by VulDB Data Team • 11/17/2020
The vulnerability identified as CVE-2020-3598 affects Cisco Vision Dynamic Signage Director, a web-based management interface designed for digital signage solutions. This critical flaw stems from inadequate authentication controls within the application's web interface, creating an unauthorized access vector that could compromise the security posture of affected systems. The vulnerability resides in the management interface's design where certain sections lack proper authentication mechanisms, allowing malicious actors to bypass normal access controls through crafted web requests.
The technical exploitation of this vulnerability occurs through specific URL manipulation techniques that target unprotected sections of the web interface. Attackers can construct malicious URLs that directly access restricted administrative functions without requiring valid credentials or authentication tokens. This represents a classic authentication bypass vulnerability that falls under the CWE-287 category, which addresses improper authentication issues in software applications. The flaw demonstrates poor input validation and access control implementation where the application fails to properly verify user identities before granting access to sensitive administrative functions.
The operational impact of this vulnerability extends beyond simple information disclosure to include potential configuration changes that could fundamentally alter the behavior of digital signage systems. An attacker with access to the vulnerable interface could modify display content, adjust system settings, or even disable critical functionality, potentially disrupting business operations or compromising brand integrity. The remote nature of the exploit means that attackers do not require physical access to the device or network presence, making this vulnerability particularly dangerous in enterprise environments where digital signage systems may be exposed to external networks. This aligns with ATT&CK technique T1071.004 for application layer protocol manipulation and T1068 for local privilege escalation through unauthenticated access.
Organizations should immediately implement network segmentation to isolate affected Cisco Vision Dynamic Signage Director systems from untrusted networks and apply the latest security patches provided by Cisco. Network access control measures including firewall rules and web application firewalls should be configured to restrict access to the affected management interface. Regular security assessments and penetration testing should be conducted to identify similar authentication bypass vulnerabilities in other networked devices. The vulnerability highlights the importance of implementing defense-in-depth strategies and proper access control mechanisms in all web-based applications, particularly those managing critical infrastructure components. Additionally, security monitoring should be enhanced to detect unusual access patterns or unauthorized configuration changes that might indicate exploitation attempts.