CVE-2021-38788 : Security Advisory and Response
Discover the impact of CVE-2021-38788 found in Allwinner R818 SoC Android Q SDK V1.0. Learn about the vulnerability, affected systems, exploitation, and mitigation steps.
A vulnerability, CVE-2021-38788, has been identified in the Background service in Allwinner R818 SoC Android Q SDK V1.0. Malicious apps can exploit this vulnerability to cause a denial of service by interfering with background applications.
Understanding CVE-2021-38788
This section sheds light on the nature of the CVE-2021-38788 vulnerability.
What is CVE-2021-38788?
The Background service in Allwinner R818 SoC Android Q SDK V1.0 is a service utilized to manage background applications. Hackers can manipulate its interface to restrict the number of background apps to 0 and insert themselves into the whitelist. Consequently, when other apps shift to the background, they are abruptly halted by the system, leading to a denial of service attack.
The Impact of CVE-2021-38788
The vulnerability allows malicious apps to disrupt normal operation by imposing a denial of service attack through the manipulation of background application settings.
Technical Details of CVE-2021-38788
Here, we delve into the technical aspects of CVE-2021-38788.
Vulnerability Description
The flaw in the Background service of Allwinner R818 SoC Android Q SDK V1.0 permits apps to tamper with background app management, resulting in unauthorized denial of service.
Affected Systems and Versions
Allwinner R818 SoC Android Q SDK V1.0 is impacted by this vulnerability.
Exploitation Mechanism
Malicious apps can exploit the service's interface to restrict background apps and initiate a denial of service attack.
Mitigation and Prevention
In this section, we explore the measures to mitigate and prevent the exploitation of CVE-2021-38788.
Immediate Steps to Take
Users and developers must be cautious of suspicious apps and ensure regular security updates to mitigate the risks associated with this vulnerability.
Long-Term Security Practices
Implement robust security protocols and practices, such as app whitelisting and monitoring, to prevent unauthorized access and mitigate potential threats.
Patching and Updates
Vendors should release patches and updates promptly to address this vulnerability and enhance the security of affected systems.