CVE-2022-37090 in H200
Summary
by MITRE • 08/25/2022
H3C H200 H200V100R004 was discovered to contain a stack overflow via the function Edit_BasicSSID.
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Analysis
by VulDB Data Team • 10/01/2022
The vulnerability identified as CVE-2022-37090 affects H3C H200 and H200V100R004 wireless access point devices, representing a critical stack overflow condition that can be exploited through the Edit_BasicSSID function. This flaw resides within the device's web management interface and demonstrates a classic buffer overflow vulnerability that occurs when uncontrolled user input is processed without proper bounds checking. The vulnerability enables remote code execution capabilities when an attacker successfully manipulates the Edit_BasicSSID function with maliciously crafted input parameters.
The technical implementation of this vulnerability stems from inadequate input validation within the wireless access point's firmware, specifically in how it handles SSID configuration parameters through the web interface. When a user submits data to the Edit_BasicSSID function, the system fails to properly validate the length and content of the input before copying it into a fixed-size buffer on the stack. This classic programming error allows an attacker to overwrite adjacent memory locations, potentially corrupting the stack frame and executing arbitrary code with the privileges of the web server process. The vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is classified as a high-severity weakness in the Common Weakness Enumeration catalog.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with complete control over the affected wireless access point. An attacker can leverage this vulnerability to gain unauthorized access to the device's management interface, modify wireless network configurations, inject malicious code, or establish persistent backdoors within the network infrastructure. The implications are particularly severe in enterprise environments where wireless access points serve as critical network entry points, potentially enabling attackers to move laterally within the network or use the compromised device as a pivot point for further attacks. This vulnerability also aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1078.004 for Valid Accounts to maintain persistence and establish covert communication channels.
Mitigation strategies for CVE-2022-37090 should prioritize immediate firmware updates from H3C to address the underlying buffer overflow condition in the Edit_BasicSSID function. Organizations must implement network segmentation to limit access to wireless access point management interfaces, restrict administrative privileges, and deploy network monitoring solutions to detect anomalous traffic patterns that may indicate exploitation attempts. Additional defensive measures include disabling unnecessary web management interfaces, implementing strong authentication mechanisms, and conducting regular vulnerability assessments to identify similar issues in other network devices. The vulnerability highlights the importance of input validation and proper memory management practices in embedded systems, particularly in network infrastructure devices where security flaws can have widespread consequences across enterprise networks.