CVE-2018-7920 Denial of service in AR1200, AR160, AR200, AR2200, AR3200

High 7.5 Published 19 Apr 2018 Updated 16 Sep 2024

Remote attackers can exhaust socket resources on Huawei AR routers via TCP messages, causing a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-7920?

CVE-2018-7920 is a high-severity denial of service vulnerability in Huawei Ar3200 Firmware, published on 19 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Huawei AR1200 V200R006C10SPC300, AR160 V200R006C10SPC300, AR200 V200R006C10SPC300, AR2200 V200R006C10SPC300, AR3200 V200R006C10SPC300 devices have an improper resource management vulnerability. Due to the improper implementation of ACL mechanism, a remote attacker may send TCP messages to the management interface of the affected device to exploit this vulnerability. Successful exploit could exhaust the socket resource of management interface, leading to a DoS condition.

Weakness: CWE-400

Which versions are affected by CVE-2018-7920?

It affects 5 products.

Products include Huawei Ar1200 Firmware, Huawei Ar160 Firmware, Huawei Ar200 Firmware, Huawei Ar2200 Firmware, Huawei Ar3200 Firmware.

How do I fix CVE-2018-7920?

No fix has been published for CVE-2018-7920 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-7920 being exploited?

There is no known exploitation of CVE-2018-7920 in the wild and no public exploit code.

All Huawei Ar3200 Firmware vulnerabilities

Sources

Also known as GHSA-vmrh-mj92-7wj2.