CVE-2021-0443 : Security Advisory and Response

This CVE-2021-0443 affects Android versions 8.1, 9, 10, and 11. A vulnerability in ScreenshotHelper.java can lead to local information disclosure without additional privileges. User interaction is required for exploitation.

Understanding CVE-2021-0443

This vulnerability impacts Android devices running versions 8.1, 9, 10, and 11 due to an issue in handling screenshots, potentially exposing sensitive information.

What is CVE-2021-0443?

CVE-2021-0443 involves a race condition in ScreenshotHelper.java, where improperly saved screenshots may reveal private data across user profiles.

The Impact of CVE-2021-0443

The vulnerability could result in local information disclosure without the need for elevated permissions, posing a risk of exposing sensitive data to unauthorized users.

Technical Details of CVE-2021-0443

The technical description of this CVE includes details on the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

Several functions in ScreenshotHelper.java and related files may incorrectly handle saved screenshots due to a race condition, leading to potential information disclosure.

Affected Systems and Versions

Android versions 8.1, 9, 10, and 11 are affected by this vulnerability, making devices running these OS versions susceptible to local information disclosure.

Exploitation Mechanism

Exploiting CVE-2021-0443 requires user interaction to trigger the race condition and access the improperly saved screenshots, potentially revealing private data.

Mitigation and Prevention

To protect against CVE-2021-0443, immediate actions and long-term security practices are crucial to mitigate risks and ensure the safety of affected systems.

Immediate Steps to Take

Users should be cautious while taking screenshots and avoid sensitive information on the screen to prevent information disclosure until a patch is applied.

Long-Term Security Practices

Implementing regular security updates, following best practices for data protection, and maintaining user awareness are essential for long-term prevention of vulnerabilities like CVE-2021-0443.

Patching and Updates

Users are advised to apply the latest security patches provided by Android to address CVE-2021-0443 and protect their devices from potential information disclosure vulnerabilities.