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CVE-2021-38788

7.5 · HIGH

The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications.

Published Jan 19, 2022EPSS 1.68%

Overview

CVE-2021-38788 is a high-severity vulnerability. It was published on January 19, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.mdRefvul.wangan.com/a/CNVD-2021-46928Refwww.allwinnertech.com/index.php?c=product&a=index&id=92Refwww.cnvd.org.cn/flaw/show/CNVD-2021-46928GitHubgithub.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.mdRefvul.wangan.com/a/CNVD-2021-46928Refwww.allwinnertech.com/index.php?c=product&a=index&id=92Refwww.cnvd.org.cn/flaw/show/CNVD-2021-46928

How CyberStrike helps

Frequently asked questions

What is CVE-2021-38788?

CVE-2021-38788 is a high-severity vulnerability. It was published on January 19, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-38788?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-38788?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-38788?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-38788 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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