CVE-2019-3415 in ZTE
Summary
by MITRE
ZTE MW NR8000V2.4.4.03 and NR8000V2.4.4.04 are impacted by path traversal vulnerability. Due to path traversal,users can download any files.
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Analysis
by VulDB Data Team • 10/26/2023
The vulnerability identified as CVE-2019-3415 affects ZTE MW NR8000 series devices running firmware versions 2.4.4.03 and 2.4.4.04, representing a critical path traversal flaw that compromises the security posture of these network infrastructure components. This vulnerability resides within the device management interface where insufficient input validation allows malicious actors to manipulate file path parameters and access arbitrary files on the system. The affected devices operate within telecommunications environments where they handle sensitive operational data and configuration files that should remain protected from unauthorized access.
Path traversal vulnerabilities occur when applications fail to properly sanitize user-supplied input before using it to access files or directories on the server. In this case, the ZTE MW NR8000 devices lack proper validation mechanisms to prevent directory traversal sequences such as "../" or similar constructs that could enable attackers to navigate beyond the intended directory boundaries. The vulnerability specifically manifests in the file download functionality where users can manipulate parameters to retrieve files from locations outside the intended scope, potentially including system configuration files, log data, or other sensitive information that should remain restricted to authorized personnel only.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it provides attackers with potential pathways to escalate their privileges and compromise the entire network infrastructure. Network administrators who rely on these devices for critical communications services face significant risks when such vulnerabilities exist in their deployment. The vulnerability can be exploited remotely without requiring authentication, making it particularly dangerous in environments where network access is not properly segmented. Attackers could potentially extract sensitive configuration data, system credentials, or other operational information that could be used to launch further attacks against the network or compromise the integrity of the telecommunications infrastructure.
The vulnerability aligns with CWE-22 Path Traversal and follows patterns consistent with ATT&CK technique T1059 Command and Scripting Interpreter, where adversaries leverage system interfaces to execute malicious commands through file access manipulation. Organizations should implement immediate mitigations including firmware updates from ZTE to address the vulnerability, network segmentation to limit access to management interfaces, and monitoring of unusual file access patterns. Additionally, implementing proper input validation and output encoding mechanisms within the device management interfaces would prevent similar vulnerabilities from occurring in future deployments. Security teams should also conduct comprehensive assessments of their network infrastructure to identify any other devices that may be running vulnerable versions of the ZTE MW NR8000 firmware and ensure that all network management interfaces are properly secured through access controls and network monitoring systems to detect potential exploitation attempts.