CVE-2017-15327 in S12700
Summary
by MITRE
S12700 V200R005C00, V200R006C00, V200R006C01, V200R007C00, V200R007C01, V200R007C20, V200R008C00, V200R008C06, V200R009C00, V200R010C00, S7700 V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R006C01, V200R007C00, V200R007C01, V200R008C00, V200R008C06, V200R009C00, V200R010C00, S9700 V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R006C01, V200R007C00, V200R007C01, V200R008C00, V200R009C00, V200R010C00 have an improper authorization vulnerability on Huawei switch products. The system incorrectly performs an authorization check when a normal user attempts to access certain information which is supposed to be accessed only by authenticated user. Successful exploit could cause information disclosure.
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Analysis
by VulDB Data Team • 02/27/2023
This vulnerability exists within Huawei switch products across multiple model series including S12700, S7700, and S9700 routers and switches. The affected versions span from V200R005C00 through V200R010C00 across various product lines. The core issue manifests as an improper authorization check that allows normal users to access restricted information that should only be available to authenticated users. This represents a fundamental breakdown in the access control mechanisms that govern how users interact with system resources and administrative functions.
The technical flaw stems from inadequate validation of user permissions during information access requests. When a normal user attempts to access specific system information, the authorization system fails to properly verify whether the user possesses the necessary privileges to access that particular data. This misconfiguration creates an information disclosure vulnerability where unauthorized users can potentially retrieve sensitive configuration data, operational parameters, or administrative information that should remain restricted to authenticated administrators. The vulnerability operates at the application layer and affects the authentication and authorization framework components of the switch operating system.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more sophisticated attacks. An attacker who successfully exploits this vulnerability could gain insights into network configurations, user account details, system parameters, and other sensitive operational data. This information could then be leveraged to plan further attacks, understand network topology, identify potential weaknesses in other system components, or facilitate privilege escalation attempts. The vulnerability essentially undermines the principle of least privilege by allowing unauthorized access to data that should remain protected within the system's security boundaries.
From a cybersecurity perspective, this vulnerability aligns with CWE-284, which addresses improper access control issues, and represents a clear violation of the principle that access to system resources should be strictly controlled based on user authentication and authorization status. The vulnerability also maps to ATT&CK technique T1078, which covers valid accounts and legitimate credentials for unauthorized access. Organizations should implement immediate mitigations including applying the latest firmware updates from Huawei, reviewing and strengthening access control policies, conducting thorough security assessments of network infrastructure, and implementing network segmentation to limit the potential impact of such unauthorized access. Additionally, regular monitoring of system logs for suspicious access patterns and maintaining comprehensive audit trails can help detect exploitation attempts and provide evidence for incident response activities.