CVE-2022-34600 in Magic R200
Summary
by MITRE • 07/20/2022
H3C Magic R200 R200V200R004L02 was discovered to contain a stack overflow via the EditSTList interface at /goform/aspForm.
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Analysis
by VulDB Data Team • 08/15/2022
The vulnerability identified as CVE-2022-34600 affects the H3C Magic R200 R200V200R004L02 network device firmware, representing a critical stack overflow condition within the device's web interface management system. This flaw exists in the EditSTList interface located at the /goform/aspForm endpoint, which serves as a communication channel for administrators to modify system settings through web-based forms. The stack overflow vulnerability arises from insufficient input validation and bounds checking within the firmware's handling of user-supplied data passed through this specific interface.
The technical implementation of this vulnerability stems from improper memory management practices within the device's embedded web server component. When legitimate administrative users or attackers submit crafted payloads through the EditSTList form interface, the system fails to properly validate the length or content of incoming parameters before processing them. This allows an attacker to overwrite adjacent memory locations on the stack, potentially leading to arbitrary code execution or system crash. The vulnerability manifests as a classic stack-based buffer overflow condition that can be exploited by sending specially crafted HTTP requests to the vulnerable endpoint.
The operational impact of this vulnerability extends beyond simple system instability, as it provides potential attackers with a pathway to gain unauthorized administrative access to the network device. An attacker who successfully exploits this vulnerability could execute malicious code with the privileges of the web server process, potentially leading to complete device compromise. This compromise could enable attackers to modify network configurations, redirect traffic, install backdoors, or use the device as a pivot point for further attacks within the network infrastructure. The vulnerability affects organizations that rely on H3C Magic R200 devices for network management and security, potentially exposing their entire network to unauthorized access and manipulation.
Security practitioners should prioritize immediate mitigation of this vulnerability through firmware updates provided by H3C, as the stack overflow condition presents a significant risk to network infrastructure security. Organizations should also implement network segmentation and access controls to limit exposure of vulnerable devices to untrusted networks. The vulnerability aligns with CWE-121, Stack-based Buffer Overflow, and represents a common attack vector that maps to multiple ATT&CK techniques including T1059 for command and scripting interpreter and T1078 for valid accounts. Network administrators should monitor for suspicious traffic patterns and implement intrusion detection systems to identify potential exploitation attempts against this interface. Given the nature of embedded network devices, regular security assessments and firmware updates remain critical defensive measures to address similar vulnerabilities in network infrastructure components.