CVE-2023-51363 in VR-S1000
Summary
by MITRE • 12/26/2023
VR-S1000 firmware Ver. 2.37 and earlier allows a network-adjacent unauthenticated attacker who can access the product's web management page to obtain sensitive information.
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Analysis
by VulDB Data Team • 01/19/2024
The vulnerability identified as CVE-2023-51363 affects the VR-S1000 firmware version 2.37 and earlier, representing a critical security flaw that exposes sensitive information to unauthenticated attackers within the network perimeter. This device operates as a network management system that provides web-based administrative interfaces, making it a prime target for reconnaissance and information gathering activities by threat actors. The vulnerability specifically resides in the web management page implementation where proper authentication mechanisms are either absent or insufficiently enforced, allowing attackers to access sensitive data without requiring valid credentials or prior authentication.
The technical nature of this flaw falls under the category of insufficient authentication or weak access control, which aligns with CWE-287 - Improper Authentication and CWE-306 - Missing Authentication for Critical Function. The vulnerability enables an attacker who can reach the device's management interface through network adjacency to extract sensitive information that should only be accessible to authorized administrators. This type of exposure represents a fundamental breakdown in the security model of the device, as the web interface fails to properly validate user credentials or implement proper access controls before granting access to sensitive system information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable intelligence that can be leveraged for subsequent attacks within the network. The sensitive information that can be obtained through this vulnerability may include system configurations, user credentials, network topology details, device identifiers, and potentially other confidential data that could aid in further exploitation attempts. This exposure creates a significant risk for organizations that rely on the VR-S1000 device for network management, as it effectively removes the barrier between unauthorized users and critical system information that should remain protected.
Security professionals should note that this vulnerability represents a critical risk in environments where network segmentation is not properly implemented, as an attacker within the same network segment can immediately exploit this flaw without requiring additional attack vectors. The attack surface is minimized to network-adjacent access, but this still represents a serious concern for organizations that do not properly isolate management interfaces from general network traffic. The lack of authentication enforcement on the web management page creates a persistent security risk that remains active until the firmware is updated to a version that addresses this vulnerability.
Organizations should immediately implement mitigations including firmware updates to the latest available version that resolves this vulnerability, network segmentation to isolate management interfaces from general network traffic, and proper access control measures to restrict access to the device's web management interface. Additionally, monitoring for unauthorized access attempts to the management interface should be implemented to detect potential exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date firmware and implementing proper network security controls, as these measures provide defense-in-depth against attacks that exploit authentication bypass vulnerabilities. This case highlights the necessity of applying security patches promptly and maintaining inventory control of network devices to ensure all systems are protected against known vulnerabilities. The ATT&CK framework would categorize this vulnerability under T1566 - Phishing and T1071.1 - Application Layer Protocol: Web Protocols, as it enables unauthorized access through web-based interfaces and information gathering activities that support broader attack chains.