CVE-2022-37071 in GR-1200W
Summary
by MITRE • 08/25/2022
H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function UpdateOne2One.
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Analysis
by VulDB Data Team • 08/25/2022
The vulnerability identified as CVE-2022-37071 affects the H3C GR-1200W MiniGRW1A0V100R006 wireless router device, representing a critical stack overflow condition that can be exploited through the UpdateOne2One function. This flaw exists within the device's firmware implementation and demonstrates a fundamental memory management issue that could allow remote attackers to execute arbitrary code or cause system instability. The vulnerability stems from insufficient input validation and bounds checking within the UpdateOne2One function, which processes data without proper sanitization mechanisms. Such a flaw represents a significant security risk as it could enable attackers to gain unauthorized access to the device's operational environment and potentially compromise the entire network infrastructure. The stack overflow condition specifically occurs when the device receives specially crafted input data that exceeds the allocated buffer space, causing the program to overwrite adjacent memory locations. This type of vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions, and aligns with ATT&CK technique T1210, which covers exploitation of remote services through buffer overflow attacks. The affected device operates as a wireless gateway and typically serves as a primary network access point, making it an attractive target for attackers seeking to establish persistent network access.
The technical exploitation of this vulnerability requires careful crafting of input parameters that are processed by the UpdateOne2One function, which likely handles configuration updates or network parameter modifications. Attackers can potentially send malformed packets or commands that trigger the buffer overflow condition, allowing them to overwrite return addresses and execute malicious code with the privileges of the affected service. The stack overflow occurs during the processing of user-supplied data, which suggests that network protocols or web interfaces that interact with this function could serve as attack vectors. The vulnerability is particularly concerning because it could be exploited remotely without requiring authentication, making it a prime target for automated exploitation tools. Network traffic analysis reveals that the affected function may be invoked during routine network operations, meaning that a successful exploitation could occur during normal device operation. This characteristic significantly increases the attack surface and makes the vulnerability particularly dangerous in environments where the device is exposed to untrusted network traffic. The memory corruption resulting from the stack overflow could lead to denial of service conditions or complete system compromise, depending on the attacker's objectives and the specific implementation details of the vulnerable code.
The operational impact of CVE-2022-37071 extends beyond simple device compromise, as the affected H3C GR-1200W device serves as a critical network infrastructure component that could provide attackers with persistent access to the network. Once exploited, the vulnerability could enable attackers to perform man-in-the-middle attacks, monitor network traffic, modify network configurations, or establish backdoor access points for future exploitation attempts. The device's role as a wireless gateway means that successful exploitation could potentially allow attackers to compromise all devices connected to the network, creating a significant escalation of risk. Organizations using this device in production environments face potential data breaches, network disruption, and compliance violations due to the exposure of unpatched vulnerabilities. The vulnerability could also be leveraged as part of larger attack campaigns where the compromised device serves as a pivot point for attacking other network segments. Security monitoring systems should be configured to detect anomalous traffic patterns that might indicate exploitation attempts, particularly around the network protocols that invoke the vulnerable UpdateOne2One function. The attack vector for this vulnerability aligns with ATT&CK technique T1071, which covers application layer protocol usage, and could potentially be combined with other techniques to establish more sophisticated attack chains. Given the device's typical deployment in both enterprise and residential environments, the potential for widespread exploitation exists, making immediate remediation essential for maintaining network security posture.
Mitigation strategies for CVE-2022-37071 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 to limit the potential impact of exploitation, particularly by isolating the affected device from critical network segments. Access controls should be strengthened to prevent unauthorized access to device management interfaces, and network monitoring should be enhanced to detect suspicious traffic patterns associated with exploitation attempts. The implementation of intrusion detection systems can help identify potential exploitation activities targeting the vulnerable UpdateOne2One function. Additionally, network administrators should consider disabling unnecessary services and ports on the affected device to reduce the attack surface. Regular security audits should be conducted to identify other potential vulnerabilities within the device's configuration and operational environment. Organizations should also implement network access control policies that limit which systems can communicate with the vulnerable device. The vulnerability's classification as a stack overflow condition necessitates careful attention to input validation and memory management practices in network device firmware development. Security teams should maintain awareness of similar vulnerabilities in other network equipment and implement comprehensive vulnerability management programs that include regular firmware updates and security assessments. The remediation process should also include thorough testing of patches to ensure that updates do not introduce compatibility issues or unintended side effects in the device's operational functionality.