Vulnerability · Published Jan 19, 2022 · Assigned by mitre
CVE-2021-38788
High 7.5
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.7%top 23.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
References
- https://www.allwinnertech.com/index.php?c=product&a=index&id=92 x_refsource_MISC
- https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md x_refsource_MISC
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928 x_refsource_MISC
- https://vul.wangan.com/a/CNVD-2021-46928 x_refsource_MISC