CVE-2021-0386 Explained : Impact and Mitigation

Android devices running Android-11 are affected by a security vulnerability in onCreate of UsbConfirmActivity, potentially leading to local privilege escalation through tapjacking. User interaction is required for exploitation.

Understanding CVE-2021-0386

This CVE identifies an elevation of privilege vulnerability in Android-11 devices due to an insecure default value in onCreate of UsbConfirmActivity.

What is CVE-2021-0386?

The CVE-2021-0386 vulnerability in Android-11 devices allows for local privilege escalation by exploiting an insecure default value in onCreate of UsbConfirmActivity. User input is necessary for the exploit.

The Impact of CVE-2021-0386

The impact of CVE-2021-0386 on Android-11 devices is the potential elevation of privilege through tapjacking, which could allow an attacker to gain escalated privileges with user interaction.

Technical Details of CVE-2021-0386

This section provides technical details about the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability lies in onCreate of UsbConfirmActivity in Android-11, presenting a tapjacking vector with an insecure default value that could result in local privilege escalation.

Affected Systems and Versions

Affected systems include Android devices running Android-11, where the security flaw in onCreate of UsbConfirmActivity exists.

Exploitation Mechanism

User interaction is required to exploit the CVE-2021-0386 vulnerability on Android-11 devices, leveraging the insecure default value in onCreate of UsbConfirmActivity.

Mitigation and Prevention

To mitigate the risks posed by CVE-2021-0386, immediate actions and long-term security practices are recommended along with timely patching and updates.

Immediate Steps to Take

Promptly update Android-11 devices and exercise caution while interacting with unknown or suspicious applications to prevent potential privilege escalation.

Long-Term Security Practices

Implement security best practices like avoiding clicking on unverified links or granting unnecessary permissions to apps to enhance overall device security.

Patching and Updates

Regularly check for security bulletins and apply patches provided by the device manufacturer to address CVE-2021-0386 and other vulnerabilities effectively.