CVE-2021-39631 Explained : Impact and Mitigation
Learn about CVE-2021-39631, a security flaw in Android versions 10, 11, and 12 leading to potential local information disclosure. Explore impacts, affected systems, and mitigation steps.
This CVE-2021-39631 article provides insights into a potential information disclosure vulnerability in Android versions 10, 11, and 12, highlighting the impact, affected systems, and mitigation strategies.
Understanding CVE-2021-39631
CVE-2021-39631 pertains to a vulnerability in the "Clear storage" functionality of Android versions 10, 11, and 12, potentially leading to local information disclosure.
What is CVE-2021-39631?
The vulnerability involves misleading messages in the "Clear storage" function, setting incorrect security/privacy expectations, and enabling local information disclosure without requiring additional privileges or user interaction.
The Impact of CVE-2021-39631
The vulnerability could result in local information disclosure without the need for extra execution privileges, posing a risk to user privacy.
Technical Details of CVE-2021-39631
This section delves into the specifics of the vulnerability in Android versions 10, 11, and 12.
Vulnerability Description
The issue lies in the clear_data_dlg_text of strings.xml, creating misleading security expectations that could lead to information disclosure.
Affected Systems and Versions
- Product: Android
- Versions Affected: Android-10, Android-11, Android-12
Exploitation Mechanism
The vulnerability exploits misleading messages in the "Clear storage" functionality, potentially allowing local information disclosure.
Mitigation and Prevention
Explore the steps to mitigate and prevent the CVE-2021-39631 vulnerability.
Immediate Steps to Take
- Update Android devices running versions 10, 11, and 12 to the latest patches provided by the vendor.
- Avoid using the "Clear storage" feature until the device is patched.
Long-Term Security Practices
- Regularly update Android devices to the latest software versions.
- Exercise caution while interacting with potentially misleading security messages.
Patching and Updates
- Stay informed about security bulletins and patches released by Android for timely updates and vulnerability mitigation.