CVE-2021-22393 Denial of service in CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800

High 7.5 Published 28 Apr 2021 Updated 3 Aug 2024

Attackers can cause denial of service on Huawei CloudEngine switches by sending specific messages, disrupting normal network operations.

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-2021-22393?

CVE-2021-22393 is a high-severity denial of service vulnerability in CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800, published on 28 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is a denial of service vulnerability in some versions of CloudEngine 5800, CloudEngine 6800, CloudEngine 7800 and CloudEngine 12800. The affected product cannot deal with some messages because of module design weakness . Attackers can exploit this vulnerability by sending a large amount of specific messages to cause denial of service. This can compromise normal service.

Which versions are affected by CVE-2021-22393?

It affects 4 products.

Products include Huawei Cloudengine 12800 Firmware, Huawei Cloudengine 5800, Huawei Cloudengine 6800 Firmware, Huawei Cloudengine 7800 Firmware.

How do I fix CVE-2021-22393?

No fix has been published for CVE-2021-22393 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-2021-22393 being exploited?

There is no known exploitation of CVE-2021-22393 in the wild and no public exploit code.

Sources

Also known as GHSA-2ggh-r3h4-fjpw.