CVE-2019-18338 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 SiNVR 3 Central Control Server (CCS) contains a directory traversal vulnerability in its XML-based communication protocol as provided by default on ports 5444/tcp and 5440/tcp. An authenticated remote attacker with network access to the CCS server could exploit this vulnerability to list arbitrary directories or read files outside of the CCS application context.
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Analysis
by VulDB Data Team • 03/11/2024
The vulnerability CVE-2019-18338 represents a critical directory traversal flaw in SiNVR 3 security systems that affects both Central Control Server and Video Server components across all versions. This vulnerability exists within the XML-based communication protocol implementation that operates on default ports 5444/tcp and 5440/tcp, making it accessible to remote attackers who can establish network connectivity to the affected systems. The flaw stems from inadequate input validation and path sanitization within the communication protocol, allowing malicious actors to manipulate file system access requests through crafted XML payloads that bypass normal security boundaries.
The technical exploitation of this vulnerability occurs through authenticated remote access to the SiNVR 3 CCS server, where attackers can construct specially formatted XML requests that traverse directory structures beyond the intended application context. This allows unauthorized file system enumeration and content retrieval from arbitrary locations on the server, potentially exposing sensitive configuration files, user credentials, system logs, and other confidential data that should remain protected within the application's restricted environment. The vulnerability aligns with CWE-22 Directory Traversal and CWE-23 Relative Path Traversal, representing a fundamental flaw in input validation and access control mechanisms.
The operational impact of this vulnerability extends beyond simple data exposure, as it provides attackers with potential access to system-level information that could facilitate further exploitation or lateral movement within network environments. Security administrators may face unauthorized access to surveillance system configurations, which could reveal network topology, device credentials, and operational parameters that compromise overall security posture. The vulnerability's authentication requirement does not adequately protect against insider threats or credential compromise scenarios, making it particularly dangerous in environments where privileged accounts are compromised or where attackers gain initial access through other vectors.
Mitigation strategies should focus on immediate network segmentation and access control implementation to restrict access to the affected ports 5444/tcp and 5440/tcp to only authorized personnel and systems. Network firewalls should be configured to limit exposure of these services to trusted networks only, while implementing robust input validation and XML parsing restrictions within the application layer. Security patches or updates from SiNVR vendors should be applied immediately upon availability, and organizations should conduct thorough security assessments of their surveillance infrastructure to identify similar vulnerabilities in other components. Additionally, monitoring systems should be enhanced to detect anomalous XML communication patterns that may indicate exploitation attempts, aligning with ATT&CK technique T1071.004 for application layer protocol tunneling and T1083 for file and directory discovery.