CVE-2021-38788 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5