CVE-2017-2700 in AC6005
Summary
by MITRE
AC6005 with software V200R006C10, AC6605 with software V200R006C10 have a DoS Vulnerability. An attacker can send malformed packets to the device, which causes the device memory leaks, leading to DoS attacks.
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Analysis
by VulDB Data Team • 01/11/2023
The vulnerability identified as CVE-2017-2700 affects AC6005 and AC6605 wireless access points running firmware version V200R006C10. This represents a denial of service vulnerability that specifically targets the memory management mechanisms within these network devices. The flaw manifests when the devices receive malformed network packets that are not properly validated or handled by the firmware's packet processing routines. The vulnerability is classified under CWE-129 as an insufficient input validation, where the system fails to properly validate the integrity and structure of incoming network traffic before processing it. The affected devices are part of Huawei's wireless networking product line and are commonly deployed in enterprise and small office environments where uninterrupted network connectivity is critical.
The technical implementation of this vulnerability exploits weaknesses in the packet parsing logic of the affected firmware versions. When malformed packets are transmitted to the device, they trigger improper memory handling behaviors that result in memory leaks within the device's operating system. These memory leaks accumulate over time and eventually lead to the device becoming unresponsive or completely crashing. The attack vector is particularly concerning because it requires only that an attacker send specially crafted packets to the device, making it a remotely exploitable vulnerability that can be executed without authentication. The memory consumption patterns suggest that the firmware does not implement proper bounds checking or memory allocation safeguards when processing incoming packets, allowing malicious inputs to corrupt the device's memory management structures.
The operational impact of this vulnerability extends beyond simple service disruption as it can cause complete network outages in environments where these access points serve as primary network infrastructure. Organizations relying on these devices for wireless connectivity may experience extended periods of network downtime, potentially affecting business operations, employee productivity, and customer service delivery. The vulnerability's remote exploitability means that attackers can potentially target these devices from outside the network perimeter, making it a particularly dangerous threat to organizations with limited network segmentation. According to ATT&CK framework category T1499, this vulnerability represents a network denial of service attack that can be executed through network protocols and can be classified under T1071.1 for application layer protocol usage. The memory leak characteristic also aligns with ATT&CK technique T1070.004, which involves the modification of existing system processes to cause resource exhaustion.
Mitigation strategies for CVE-2017-2700 should include immediate firmware updates from Huawei to address the memory handling flaws in the affected software versions. Network administrators should implement network segmentation to limit the attack surface and prevent unauthorized access to these devices. Additionally, deploying intrusion detection systems that can identify and block malformed packet patterns can provide an additional layer of protection. The vulnerability demonstrates the importance of proper input validation and memory management in embedded network devices, as highlighted by industry best practices in secure coding standards. Organizations should also consider implementing network monitoring to detect unusual memory consumption patterns that may indicate exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in other network infrastructure components. The affected firmware versions should be deprecated immediately and replaced with patched versions that include proper packet validation mechanisms and memory management safeguards.