CVE-2019-19296 in SiNVR 3 Central Control Server
Summary
by MITRE
A vulnerability has been identified in SiNVR 3 Central Control Server (CCS) (all versions), SiNVR 3 Video Server (all versions). The two FTP services (default ports 21/tcp and 5411/tcp) of the SiNVR 3 Video Server contain a path traversal vulnerability that could allow an authenticated remote attacker to access and download arbitrary files from the server, if the FTP services are enabled.
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Analysis
by VulDB Data Team • 04/11/2024
The vulnerability CVE-2019-19296 represents a critical path traversal flaw in SiNVR 3 video surveillance systems that affects both the Central Control Server and Video Server components. This vulnerability specifically targets the File Transfer Protocol services running on default ports 21/tcp and 5411/tcp, creating a significant security risk for organizations relying on these surveillance systems. The flaw enables authenticated remote attackers to exploit the FTP services and gain unauthorized access to arbitrary files stored on the server, potentially compromising sensitive video surveillance data and system integrity. The vulnerability exists within the input validation mechanisms of the FTP implementation, where proper sanitization of user-supplied paths is insufficient to prevent directory traversal attacks.
From a technical perspective, the vulnerability manifests as a failure to properly validate and sanitize file paths submitted through the FTP protocol, allowing attackers to manipulate directory traversal sequences such as "../" or "..\" to navigate outside the intended directory structure. This type of flaw falls under the Common Weakness Enumeration category CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. The vulnerability requires authentication to exploit, meaning that an attacker must first obtain valid credentials to access the FTP services before being able to leverage the path traversal mechanism. However, the requirement for authentication does not mitigate the severity of the impact, as compromised credentials could lead to complete system compromise.
The operational impact of this vulnerability extends beyond simple unauthorized file access, potentially enabling attackers to extract sensitive surveillance footage, system configuration files, user credentials, and other confidential data stored on the video server. In security terms, this vulnerability aligns with the MITRE ATT&CK framework's technique T1078 for Valid Accounts and T1041 for Exfiltration, as it allows for both unauthorized access and data extraction from the compromised system. Organizations utilizing SiNVR 3 systems face significant risks including potential privacy violations, regulatory compliance breaches, and operational disruption if attackers successfully exploit this vulnerability. The attack surface is particularly concerning for critical infrastructure and enterprise environments where video surveillance systems contain sensitive operational data and are often integrated with other security systems.
Mitigation strategies for CVE-2019-19296 should focus on immediate remediation through vendor-provided patches and updates, followed by comprehensive security hardening measures. Organizations should disable FTP services if they are not required for operations, implement network segmentation to limit access to the affected ports, and enforce strict access controls for FTP accounts. Additionally, regular security audits of surveillance systems, implementation of intrusion detection systems, and monitoring for suspicious FTP activity should be deployed. The vulnerability underscores the importance of secure coding practices and proper input validation in network services, particularly those handling file operations. Organizations should also consider implementing automated vulnerability scanning tools that can detect similar path traversal vulnerabilities in their network infrastructure and ensure that all network services undergo regular security assessments to prevent exploitation of similar weaknesses.