CVE-2018-7920 : What You Need to Know

Huawei AR1200, AR160, AR200, AR2200, AR3200 devices are vulnerable to improper resource management due to an ACL mechanism flaw, potentially leading to denial-of-service attacks.

Understanding CVE-2018-7920

This CVE involves a vulnerability in Huawei devices that could be exploited by remote attackers, causing a denial-of-service situation.

What is CVE-2018-7920?

The vulnerability in Huawei AR series devices allows attackers to deplete socket resources by sending TCP messages to the management interface, resulting in a denial-of-service condition.

The Impact of CVE-2018-7920

Exploiting this vulnerability could lead to a denial-of-service (DoS) situation on the affected Huawei devices, impacting their availability and performance.

Technical Details of CVE-2018-7920

The vulnerability is related to improper resource management in Huawei AR series devices, specifically AR1200, AR160, AR200, AR2200, AR3200.

Vulnerability Description

The flaw arises from the improper implementation of the ACL mechanism, allowing remote attackers to exhaust socket resources through TCP messages to the management interface.

Affected Systems and Versions

Affected Products: AR1200, AR160, AR200, AR2200, AR3200
Vulnerable Versions: V200R006C10SPC300

Exploitation Mechanism

Attackers exploit the vulnerability by sending TCP messages to the management interface of the affected devices.

Mitigation and Prevention

To address CVE-2018-7920, users and administrators can take the following steps:

Immediate Steps to Take

Apply patches and updates provided by Huawei promptly.
Implement network segmentation to limit access to vulnerable devices.
Monitor network traffic for any suspicious activity targeting the affected devices.

Long-Term Security Practices

Regularly update and patch all network devices to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Huawei has released patches to address the vulnerability; ensure timely installation to secure the affected devices.