CVE-2022-37094 in H200
Summary
by MITRE • 08/25/2022
H3C H200 H200V100R004 was discovered to contain a stack overflow via the function Edit_BasicSSID_5G.
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Analysis
by VulDB Data Team • 10/01/2022
The vulnerability identified as CVE-2022-37094 affects H3C H200 and H200V100R004 wireless access points, representing a critical stack overflow condition that arises within the Edit_BasicSSID_5G function. This flaw demonstrates a classic buffer management issue where insufficient input validation allows malicious actors to manipulate memory allocation during wireless network configuration processes. The vulnerability specifically targets the 5GHz wireless band configuration interface, suggesting that the stack buffer overflow occurs when processing SSID parameters for wireless network identification. Such a condition creates a potential path for remote code execution or system compromise, as attackers can manipulate the function's input parameters to overwrite adjacent memory locations on the stack.
The technical implementation of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows data to overwrite adjacent stack memory. The Edit_BasicSSID_5G function likely handles user-supplied SSID values without adequate sanitization or length verification, creating an exploitable condition where crafted input can exceed the allocated buffer space. This type of vulnerability typically enables attackers to manipulate program execution flow through stack pointer corruption or return address overwrite. The specific context of wireless network configuration makes this particularly concerning as it may allow unauthorized individuals to modify network parameters, potentially leading to service disruption or unauthorized access to network resources.
From an operational perspective, this vulnerability presents significant risk to organizations relying on H3C H200 devices for wireless infrastructure management. The stack overflow condition could enable remote attackers to execute arbitrary code on affected devices, potentially leading to complete system compromise and unauthorized network access. Network administrators may face challenges in identifying exploitation attempts as the vulnerability operates within legitimate configuration interfaces, making detection difficult. The impact extends beyond simple service disruption to include potential data exfiltration, network infiltration, and lateral movement opportunities for attackers. Organizations using these devices may experience unauthorized access to wireless networks, modification of network parameters, or complete device takeover, depending on the exploitation method employed.
Mitigation strategies should prioritize immediate firmware updates from H3C to address the identified stack overflow condition in the Edit_BasicSSID_5G function. Network segmentation and access control measures should be implemented to limit exposure of affected devices to untrusted networks, particularly in environments where wireless management interfaces are accessible from external networks. Input validation controls should be enforced at multiple layers including network device configuration interfaces, web application firewalls, and network access control lists to prevent malformed SSID parameters from reaching vulnerable functions. Security monitoring should include detection of unusual configuration changes or access patterns to wireless management interfaces, with particular attention to parameters related to 5GHz wireless network configuration. Additionally, implementing network intrusion detection systems with signature-based detection for known exploitation patterns related to buffer overflow conditions can provide early warning of potential attacks targeting this vulnerability. Organizations should also consider disabling unused wireless interfaces and implementing strict access controls for wireless management functions to reduce the attack surface.