CVE-2019-18339 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 HTTP service (default port 5401/tcp) of the SiNVR 3 Video Server contains an authentication bypass vulnerability, even when properly configured with enforced authentication. A remote attacker with network access to the Video Server could exploit this vulnerability to read the SiNVR users database, including the passwords of all users in obfuscated cleartext.
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Analysis
by VulDB Data Team • 03/11/2024
This vulnerability affects SiNVR 3 Central Control Server and Video Server products where the HTTP service operates on the default port 5401/tcp. The authentication bypass flaw exists within the HTTP service implementation despite proper configuration with enforced authentication mechanisms. The vulnerability represents a critical security weakness that fundamentally undermines the authentication framework designed to protect user credentials and system access. Attackers can exploit this weakness without requiring valid credentials or network proximity, making it particularly dangerous in networked environments where the service is exposed to external networks.
The technical nature of this vulnerability stems from improper authentication handling within the HTTP service component of the SiNVR 3 products. When the system is properly configured with enforced authentication, the vulnerability still allows unauthorized access to the user database through the HTTP interface. The flaw specifically enables remote attackers to extract user credentials in obfuscated cleartext format, meaning that even if passwords are stored in an obfuscated manner, they remain readable and potentially reversible by an attacker. This represents a direct violation of authentication security principles and exposes sensitive user information to unauthorized parties.
The operational impact of this vulnerability extends beyond simple credential theft, as it provides attackers with comprehensive access to user accounts and potentially allows for further exploitation within the network. Remote attackers can leverage this vulnerability to gain unauthorized access to video surveillance systems, potentially enabling them to view live feeds, access recorded footage, and manipulate system configurations. The exposure of user database contents including obfuscated passwords creates opportunities for credential reuse attacks, lateral movement, and privilege escalation within the affected network infrastructure. This vulnerability directly impacts the integrity and confidentiality of security systems that rely on proper authentication mechanisms.
Organizations should implement immediate mitigations including network segmentation to isolate affected SiNVR 3 systems from external networks, disabling unnecessary HTTP services where possible, and applying vendor-provided patches or firmware updates when available. Network access control measures should be enforced to restrict access to port 5401/tcp to only trusted sources. Security monitoring should be enhanced to detect unusual access patterns to the HTTP service, and all user credentials should be rotated immediately following remediation efforts. The vulnerability aligns with CWE-287 which addresses improper authentication issues, and represents a technique that could be categorized under ATT&CK tactic TA0006 (Credential Access) with specific techniques related to credential dumping and authentication bypass. Regular security assessments should be conducted to identify similar authentication bypass vulnerabilities in other networked security systems to prevent similar exposures across the organization's infrastructure.