CVE-2022-30909 in Magic R100
Summary
by MITRE • 06/08/2022
H3C Magic R100 R100V100R005 was discovered to contain a stack overflow vulnerability via the CMD parameter at /goform/aspForm.
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Analysis
by VulDB Data Team • 06/11/2022
The vulnerability identified as CVE-2022-30909 affects H3C Magic R100 R100V100R005 network devices, representing a critical stack overflow flaw that can be exploited through the CMD parameter within the /goform/aspForm endpoint. This issue falls under the CWE-121 stack-based buffer overflow category, where insufficient bounds checking allows attackers to overwrite adjacent memory locations on the stack. The affected device operates with a web-based management interface that processes user input through the CMD parameter without adequate validation or sanitization mechanisms.
The technical exploitation of this vulnerability occurs when an attacker submits a maliciously crafted payload to the /goform/aspForm endpoint through the CMD parameter. The device fails to properly validate the length of the input data, allowing an attacker to exceed the allocated buffer size and overwrite critical stack memory regions. This overflow can potentially lead to arbitrary code execution, system crashes, or unauthorized access to the device's administrative functions. The vulnerability is particularly concerning as it exists within the device's web management interface, making it accessible over the network without requiring physical access or elevated privileges.
From an operational perspective, this vulnerability presents significant risks to network security infrastructure as it allows remote attackers to compromise the affected H3C Magic R100 devices. The exploitation can result in complete system takeover, enabling attackers to gain administrative control over the network device, potentially leading to man-in-the-middle attacks, network reconnaissance, or use as a pivot point for lateral movement within the network. The device's role as a network gateway makes this vulnerability particularly dangerous as it could provide attackers with access to internal network segments that would otherwise be protected by firewall rules.
The impact of this vulnerability aligns with ATT&CK technique T1210 exploiting known vulnerabilities, where adversaries leverage existing software flaws to gain unauthorized access. Network administrators should consider this vulnerability in their risk assessment frameworks, particularly given the device's role in network infrastructure management. The vulnerability demonstrates poor input validation practices and inadequate memory management within the device's web application layer, which are common patterns identified in industrial control system security assessments.
Mitigation strategies should include immediate firmware updates from H3C to address the stack overflow vulnerability, along with network segmentation to limit access to the device's management interface. Access control measures such as restricting management interface access to specific IP addresses and implementing strong authentication mechanisms can reduce the attack surface. Network monitoring should be enhanced to detect anomalous traffic patterns associated with exploitation attempts, while regular security audits should verify that no unauthorized modifications have occurred. Organizations should also implement network access control policies that limit the exposure of such devices to untrusted networks and consider deploying intrusion detection systems to monitor for exploitation attempts targeting known vulnerabilities in network infrastructure devices.