CVE-2022-37092 in H200
Summary
by MITRE • 08/25/2022
H3C H200 H200V100R004 was discovered to contain a stack overflow via the function SetAPWifiorLedInfoById.
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Analysis
by VulDB Data Team • 08/25/2022
The vulnerability identified as CVE-2022-37092 affects H3C H200 and H200V100R004 network devices, representing a critical stack overflow condition that emerges within the SetAPWifiorLedInfoById function. This flaw demonstrates a classic buffer manipulation issue where insufficient input validation allows malicious actors to craft specially formatted data that exceeds the allocated stack buffer space. The vulnerability resides in the device's wireless access point management functionality, specifically within the LED indicator configuration mechanism that controls device status visualization. The stack overflow condition creates a potential pathway for arbitrary code execution or system crashes, fundamentally compromising the device's operational integrity and network security posture.
From a technical perspective, the vulnerability manifests when the SetAPWifiorLedInfoById function processes incoming parameters without adequate bounds checking or input sanitization. The function likely accepts user-supplied data that defines LED behavior configurations, but fails to validate the length or content of this input before copying it into a fixed-size stack buffer. This classic software defect aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a common attack vector in embedded networking devices where resource constraints limit the implementation of robust input validation mechanisms. The function's design appears to assume trusted input, creating a dangerous assumption that malicious actors can exploit through crafted payloads.
The operational impact of this vulnerability extends beyond simple device instability, potentially enabling sophisticated attack scenarios that leverage the stack overflow for privilege escalation or complete system compromise. An attacker who successfully exploits this vulnerability could gain unauthorized access to the device's management interface, potentially leading to network infiltration, data exfiltration, or the establishment of persistent backdoors within the network infrastructure. The affected devices operate in critical network environments where wireless access point management controls are essential for network operations, making this vulnerability particularly dangerous. The attack surface is broad as the vulnerability likely exists in the device's web interface or management protocols, providing multiple potential entry points for exploitation. Network segmentation or access controls may not prevent exploitation if an attacker gains access to the device through other means, as the stack overflow creates a fundamental security bypass.
Mitigation strategies for CVE-2022-37092 must address both immediate remediation and long-term architectural improvements. Organizations should prioritize applying vendor-provided patches or firmware updates that correct the buffer overflow condition in the SetAPWifiorLedInfoById function, while simultaneously implementing network monitoring to detect potential exploitation attempts. The vulnerability demonstrates the importance of input validation and bounds checking, principles that align with ATT&CK technique T1059.007 for command and scripting interpreter usage, as attackers may attempt to leverage the overflow to execute malicious commands. Additional defensive measures include network segmentation to limit access to affected devices, implementing strict access controls for management interfaces, and conducting regular security assessments of embedded network infrastructure. The vulnerability also underscores the necessity of secure coding practices, particularly in embedded systems where memory management constraints can lead to dangerous assumptions about input handling and buffer safety.