CVE-2018-18376 in AirBox
Summary
by MITRE
goform/getWlanClientInfo in Orange AirBox Y858_FL_01.16_04 allows remote attackers to discover information about currently connected devices (hostnames, IP addresses, MAC addresses, and connection time) via the rand parameter.
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Analysis
by VulDB Data Team • 04/02/2020
The vulnerability identified as CVE-2018-18376 resides in the Orange AirBox Y858_FL_01.16_04 router firmware, specifically within the goform/getWlanClientInfo endpoint. This issue represents a classic information disclosure vulnerability that enables remote attackers to gather sensitive network topology information without authentication. The flaw is particularly concerning as it operates through the rand parameter, which appears to be a seemingly innocuous random value used for session management or request validation. However, the implementation fails to properly validate or sanitize this parameter, allowing attackers to manipulate the request and extract detailed information about wireless network clients.
The technical implementation of this vulnerability stems from inadequate input validation and access control mechanisms within the router's web interface. When an attacker submits a crafted request to the goform/getWlanClientInfo endpoint with a manipulated rand parameter, the system processes the request without proper authorization checks. This design flaw directly violates security principles of least privilege and proper input validation, allowing unauthorized access to network reconnaissance data. The vulnerability can be classified under CWE-200 as "Information Exposure" and potentially CWE-352 as "Cross-Site Request Forgery" depending on the specific implementation details of how the rand parameter is handled.
The operational impact of this vulnerability extends beyond simple information gathering, as it provides attackers with comprehensive insights into the network's connected devices. The exposed information includes hostnames, IP addresses, MAC addresses, and connection times, which collectively enable sophisticated network reconnaissance activities. Attackers can leverage this data to map network topology, identify vulnerable devices, plan targeted attacks, and conduct social engineering campaigns. The information disclosure creates a significant risk for organizations using this specific router model, as it effectively provides a window into their wireless network infrastructure without requiring any authentication credentials. This vulnerability aligns with ATT&CK technique T1046 "Network Service Scanning' and T1082 'System Information Discovery' as it enables attackers to gather system and network information without direct system access.
Mitigation strategies for this vulnerability should focus on immediate firmware updates from Orange or the manufacturer, as the issue stems from a software implementation flaw within the router's web interface. Network administrators should implement additional security controls including firewall rules that restrict access to the router's management interfaces, particularly from untrusted networks. The implementation of network segmentation and the use of network access control (NAC) solutions can help limit the exposure of sensitive information even if the vulnerability persists. Additionally, monitoring network traffic for unusual patterns related to the goform/getWlanClientInfo endpoint can help detect potential exploitation attempts. Organizations should also consider implementing intrusion detection systems that can identify and alert on suspicious parameter manipulation attempts targeting web application interfaces. The vulnerability demonstrates the critical importance of proper input validation and access control implementation in network devices, particularly those exposed to untrusted networks.