CVE-2017-14335 in Beijing Hanbang Hanbanggaoke
Summary
by MITRE
On Beijing Hanbang Hanbanggaoke devices, because user-controlled input is not sufficiently sanitized, sending a PUT request to /ISAPI/Security/users/1 allows an admin password change.
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Analysis
by VulDB Data Team • 09/12/2024
The vulnerability identified as CVE-2017-14335 represents a critical authentication bypass flaw affecting Beijing Hanbang Hanbanggaoke security devices. This issue stems from inadequate input validation mechanisms within the device's web interface, specifically within the ISAPI security framework that governs user management operations. The vulnerability manifests when a remote attacker can manipulate the PUT request parameters sent to the /ISAPI/Security/users/1 endpoint, allowing unauthorized modification of administrative credentials without proper authentication. This flaw directly impacts the device's ability to maintain secure access controls and represents a fundamental breakdown in the authentication architecture.
The technical implementation of this vulnerability demonstrates a classic case of insufficient input sanitization, which aligns with CWE-20 - Improper Input Validation. The device fails to properly validate or sanitize user-supplied data before processing it within the security subsystem. When a PUT request is issued to the specific endpoint, the system accepts potentially malicious input without adequate verification, allowing an attacker to modify administrative user accounts. The vulnerability is particularly concerning because it operates at the application layer, requiring minimal privileges to exploit and potentially enabling complete system compromise. Attackers can leverage this weakness to escalate their privileges from regular user level to administrative access, effectively gaining full control over the security device's configuration and operations.
The operational impact of CVE-2017-14335 extends far beyond simple credential modification, as it fundamentally undermines the security posture of affected installations. Organizations relying on these devices for physical security management face significant risks including unauthorized access to surveillance systems, potential data breaches, and complete loss of security control. The vulnerability can be exploited remotely, making it particularly dangerous for devices deployed in critical infrastructure environments where physical access may be limited or restricted. This weakness creates opportunities for attackers to modify user permissions, disable security features, or establish persistent backdoors within the security infrastructure. The implications are especially severe in environments where these devices are used for monitoring sensitive areas, as unauthorized access could lead to complete compromise of security operations.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1078 - Valid Accounts and T1566 - Phishing, as it enables unauthorized access through legitimate administrative credentials. The exploitation process typically involves crafting a malicious PUT request that bypasses normal authentication procedures, making detection particularly challenging for security monitoring systems. Organizations should implement immediate mitigations including network segmentation to isolate affected devices, implementing strong access controls for the ISAPI endpoints, and applying firmware updates from the vendor. The vulnerability also highlights the importance of secure coding practices and input validation in embedded security systems, as it demonstrates how seemingly minor validation gaps can lead to complete system compromise. Additionally, regular security assessments and penetration testing should be conducted to identify similar weaknesses in other networked security devices within the organization's infrastructure.