CVE-2021-38788 Denial of service in n/a
Malicious apps can force-stop other background applications by manipulating the background service whitelist, causing 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-2021-38788?
CVE-2021-38788 is a high-severity denial of service vulnerability in n/a, published on 19 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications. Malicious apps can use the interface provided by the service to set the number of applications allowed to run in the background to 0 and add themselves to the whitelist, so that once other applications enter the background, they will be forcibly stopped by the system, causing a denial of service.
Which versions are affected by CVE-2021-38788?
It affects 1 product.
Products include Allwinnertech Android Q Sdk.
How do I fix CVE-2021-38788?
No fix has been published for CVE-2021-38788 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-2021-38788 being exploited?
There is no known exploitation of CVE-2021-38788 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-qc2p-7ph7-28gf.