CVE-2022-37074 in GR-1200W
Summary
by MITRE • 08/25/2022
H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function switch_debug_info_set.
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Analysis
by VulDB Data Team • 10/01/2022
The vulnerability identified as CVE-2022-37074 affects the H3C GR-1200W MiniGRW1A0V100R006 wireless router device, representing a critical stack overflow condition that emerges within the switch_debug_info_set function. This flaw resides in the firmware implementation of the network device, specifically within its debugging interface functionality that manages debug information settings. The stack overflow vulnerability occurs when the device processes malformed input data through the switch_debug_info_set function, creating an exploitable condition that can be leveraged by remote attackers to compromise the device's operational integrity.
The technical nature of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations on the stack. In the context of network appliances, this type of vulnerability typically arises from inadequate input validation mechanisms within network protocol handlers or administrative interfaces. The switch_debug_info_set function appears to process user-supplied parameters without proper boundary checks, allowing an attacker to inject excessive data that overflows the allocated stack buffer and potentially corrupts adjacent memory segments including return addresses and function pointers.
From an operational perspective, this vulnerability presents significant risks to network security infrastructure as it enables remote code execution capabilities when successfully exploited. Attackers can leverage this stack overflow to gain unauthorized access to the router's administrative interface, potentially leading to complete system compromise, data exfiltration, or network disruption. The vulnerability affects devices deployed in enterprise and residential environments, making it particularly dangerous as it could be exploited by threat actors to establish persistent access points within network perimeters. The impact extends beyond individual device compromise to potentially enable broader network infiltration and lateral movement attacks.
Security mitigations for CVE-2022-37074 should prioritize immediate firmware updates from H3C to address the underlying stack overflow condition in the switch_debug_info_set function. Network administrators should implement network segmentation and access controls to limit exposure of affected devices to untrusted networks. The vulnerability demonstrates the importance of input validation and proper memory management practices in embedded systems, aligning with ATT&CK technique T1059.007 for command and scripting interpreter execution. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability, particularly focusing on unusual traffic patterns or malformed requests to the router's debugging interfaces that could indicate exploitation activity.