CVE-2018-7903 in 1288H V5
Summary
by MITRE
Huawei 1288H V5 and 288H V5 with software of V100R005C00 have a JSON injection vulnerability. An authenticated, remote attacker can launch a JSON injection to modify the password of administrator. Due to insufficient verification of the input, this could be exploited to obtain the management privilege of the system.
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Analysis
by VulDB Data Team • 03/17/2023
The CVE-2018-7903 vulnerability affects Huawei 1288H V5 and 288H V5 network equipment devices running software version V100R005C00, representing a critical security flaw that undermines the integrity of administrative access controls. This vulnerability manifests as a JSON injection issue that allows authenticated remote attackers to manipulate administrative password settings through crafted JSON payloads. The flaw resides in the insufficient input validation mechanisms within the device's management interface, creating a pathway for unauthorized privilege escalation.
The technical implementation of this vulnerability stems from inadequate sanitization of JSON data structures when processing administrative requests. When legitimate administrators interact with the device management interface, the system fails to properly validate or sanitize the JSON input parameters that control administrative functions. This insufficient verification creates a condition where maliciously crafted JSON payloads can be injected into the system, potentially allowing an attacker to modify administrator credentials without proper authorization. The vulnerability operates at the application layer and leverages the device's legitimate administrative interfaces to execute unauthorized modifications.
From an operational perspective, this vulnerability presents a severe risk to network infrastructure security as it enables remote exploitation by authenticated attackers who can potentially gain full administrative control over affected devices. The attack vector requires only network access and valid authentication credentials, making it particularly dangerous as attackers can leverage legitimate administrative sessions to inject malicious JSON content. Once exploited, the vulnerability allows attackers to modify administrator passwords, effectively granting them complete control over the device management functions and potentially enabling further attacks on the broader network infrastructure.
The impact of CVE-2018-7903 aligns with CWE-74 and CWE-79 standards, which address injection flaws and improper neutralization of special elements used in data queries. The vulnerability also maps to ATT&CK technique T1078 which covers valid accounts and privilege escalation through legitimate administrative access. Organizations should implement immediate mitigations including firmware updates to the latest available versions, network segmentation to limit access to administrative interfaces, and enhanced monitoring of administrative sessions for suspicious JSON payload patterns. Additionally, implementing strict input validation controls and access control measures can help prevent exploitation of similar injection vulnerabilities in network infrastructure devices.