CVE-2022-37088 in H200
Summary
by MITRE • 08/25/2022
H3C H200 H200V100R004 was discovered to contain a stack overflow via the function SetAP5GWifiById.
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Analysis
by VulDB Data Team • 10/01/2022
The vulnerability identified as CVE-2022-37088 affects H3C H200 and H200V100R004 network devices, representing a critical stack overflow condition that arises within the SetAP5GWifiById function. This issue constitutes a fundamental flaw in the device's memory management architecture where insufficient input validation allows malicious actors to manipulate the stack during function execution. The vulnerability resides in the wireless access point configuration handling mechanism, specifically targeting the network device's firmware implementation that manages wireless settings through the SetAP5GWifiById API endpoint. Such stack overflow conditions typically occur when a program writes data beyond the allocated buffer space on the stack, potentially leading to arbitrary code execution or system crashes.
The technical exploitation of this vulnerability leverages improper bounds checking within the wireless configuration function, enabling attackers to craft specially formatted input that exceeds the designated buffer size. When the SetAP5GWifiById function processes malformed input parameters, it fails to validate the length of incoming data against predetermined buffer limits, creating an exploitable condition where stack memory can be overwritten. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is classified as a high-risk weakness in software security. The attack surface extends to any network entity that communicates with the affected device's wireless configuration interface, potentially allowing remote code execution or denial of service conditions.
The operational impact of this vulnerability presents significant risks to network infrastructure security, particularly in enterprise and industrial environments where H3C devices are deployed. An attacker who successfully exploits this vulnerability could gain unauthorized access to the device's administrative functions, potentially leading to complete system compromise. The attack vector typically involves sending malicious payloads to the device through its wireless management interface, leveraging the lack of proper input sanitization in the SetAP5GWifiById function. This vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as successful exploitation could enable attackers to execute arbitrary commands on the affected device. The device's stack overflow condition could also be exploited to escalate privileges or maintain persistent access to the network infrastructure.
Mitigation strategies for CVE-2022-37088 should prioritize immediate firmware updates from H3C to address the underlying buffer overflow condition in the SetAP5GWifiById function. Network administrators should implement network segmentation to limit access to affected devices and restrict wireless configuration interfaces to trusted administrative networks only. Additional protective measures include deploying intrusion detection systems to monitor for suspicious traffic patterns targeting the wireless management endpoints and implementing strict input validation controls at network boundaries. Organizations should also consider disabling unnecessary wireless management features when not actively required and establish robust monitoring protocols to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of proper buffer management in embedded network devices and underscores the need for comprehensive security testing of firmware components before deployment in production environments.