CVE-2021-22491 Denial of service in EMUI
Attackers can cause service unavailability on Huawei smartphones through input verification flaws in the operating system.
- 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-2021-22491?
CVE-2021-22491 is a high-severity denial of service vulnerability in Huawei Emui, published on 28 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
There is an Input verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service availability.
Weakness: CWE-20
Which versions are affected by CVE-2021-22491?
It affects 2 products.
Products include Huawei Emui, Huawei Magic Ui.
How do I fix CVE-2021-22491?
No fix has been published for CVE-2021-22491 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-2021-22491 being exploited?
There is no known exploitation of CVE-2021-22491 in the wild and no public exploit code.
Other vulnerabilities in Huawei Emui
Sources
Also known as GHSA-3rf4-hfh4-9ww3.