CVE-2022-34602 in Magic R200
Summary
by MITRE • 07/20/2022
H3C Magic R200 R200V200R004L02 was discovered to contain a stack overflow via the ipqos_lanip_editlist interface at /goform/aspForm.
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Analysis
by VulDB Data Team • 08/15/2022
The vulnerability identified as CVE-2022-34602 affects H3C Magic R200 R200V200R004L02 network devices, representing a critical stack overflow condition within the device's web-based management interface. This flaw exists in the ipqos_lanip_editlist functionality located at the /goform/aspForm endpoint, which processes user input through HTTP requests. The stack overflow vulnerability arises when the device fails to properly validate or sanitize input parameters submitted through this specific interface, allowing malicious actors to manipulate the device's memory structure during processing.
The technical implementation of this vulnerability stems from improper input handling within the web application framework of the router's firmware. When a remote attacker submits crafted input data to the ipqos_lanip_editlist interface, the device's processing logic does not adequately check the length or content of the submitted parameters. This lack of input validation creates an exploitable condition where an attacker can overflow the stack buffer allocated for processing the request, potentially leading to arbitrary code execution or system crash. The vulnerability manifests through the web form interface, making it accessible to remote attackers without requiring physical access to the device or authentication credentials.
The operational impact of this vulnerability extends beyond simple denial-of-service conditions, as it provides potential attackers with opportunities for remote code execution and system compromise. An attacker who successfully exploits this stack overflow could gain unauthorized access to the device's operating system, potentially leading to complete system takeover. The vulnerability affects the device's Quality of Service (QoS) configuration functionality, which could allow an attacker to manipulate network traffic prioritization settings, redirect traffic, or establish persistent access points within the network. Given that this is a web-based interface vulnerability, the attack surface is broad and accessible to anyone capable of sending HTTP requests to the device's management interface.
Mitigation strategies for CVE-2022-34602 should prioritize immediate firmware updates from H3C, as the vendor has likely released patches addressing the stack overflow condition. Network administrators should implement network segmentation and access controls to limit exposure of affected devices to untrusted networks. The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is classified under the Common Weakness Enumeration framework as a fundamental memory safety issue. From an adversarial perspective, this vulnerability would likely be categorized under ATT&CK technique T1210 Exploitation of Remote Services, as it enables remote system compromise through web-based attack vectors. Security monitoring should focus on detecting unusual HTTP traffic patterns targeting the /goform/aspForm endpoint, particularly requests containing oversized parameter values or malformed input sequences that could indicate exploitation attempts.