CVE-2017-15328 in HG8245H
Summary
by MITRE
Huawei HG8245H version earlier than V300R018C00SPC110 has an authentication bypass vulnerability. An attacker can access a specific URL of the affect product. Due to improper verification of the privilege, successful exploitation may cause information leak.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 12/17/2019
The CVE-2017-15328 vulnerability represents a critical authentication bypass flaw affecting Huawei HG8245H broadband access devices running firmware versions prior to V300R018C00SPC110. This vulnerability resides within the web-based management interface of the device, specifically targeting the privilege verification mechanisms that should enforce access controls for administrative functions. The flaw allows unauthenticated attackers to gain unauthorized access to sensitive system information through direct manipulation of URL parameters, effectively circumventing the intended authentication requirements.
The technical implementation of this vulnerability stems from inadequate input validation and privilege checking within the device's web server component. When users attempt to access specific management URLs, the system fails to properly verify whether the requesting entity possesses sufficient privileges to access the requested resources. This weakness creates a path for attackers to directly access administrative interfaces without providing valid credentials, as the device does not adequately enforce authentication checks for certain endpoints. The vulnerability manifests as a lack of proper session management and authorization verification, allowing attackers to traverse the security boundaries that should protect sensitive configuration data and system parameters.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with unauthorized access to potentially sensitive system information that could include network configurations, user credentials, device settings, and other administrative data. This access could enable attackers to conduct further reconnaissance activities, modify device configurations, or potentially escalate their privileges to full administrative control. The vulnerability affects a significant number of deployed Huawei HG8245H devices in residential and small business environments, where such devices often serve as entry points for broader network infiltration attempts. The exposure of administrative interfaces without proper authentication creates a persistent security risk that can be exploited by attackers with minimal technical expertise.
Security professionals should note that this vulnerability aligns with CWE-287, which addresses improper authentication issues in software systems. The flaw demonstrates poor adherence to security best practices regarding access control and privilege management, creating a direct pathway for unauthorized access to administrative functions. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, as attackers can leverage the bypass to gain elevated privileges and access sensitive system information. Organizations should implement immediate mitigations including firmware updates to the patched version V300R018C00SPC110, network segmentation to isolate affected devices, and monitoring for suspicious access patterns to the device management interfaces. Additionally, administrators should disable remote management access where possible and implement strong network access controls to limit exposure to this vulnerability.