CVE-2021-39753 : Security Advisory and Response

This article provides details about CVE-2021-39753, a security vulnerability in Android-12L that could lead to local information disclosure.

Understanding CVE-2021-39753

This section delves into the nature of the vulnerability and its potential impact.

What is CVE-2021-39753?

CVE-2021-39753 involves a possible way to access app domain verification information in DomainVerificationService on Android-12L. The issue arises from a missing permission check, allowing for local information disclosure without requiring additional privileges or user interaction.

The Impact of CVE-2021-39753

The vulnerability could enable malicious actors to access sensitive domain verification details, leading to potential local information disclosure.

Technical Details of CVE-2021-39753

This section outlines the technical specifics of the vulnerability.

Vulnerability Description

Product: Android
Versions: Android-12L
ID: A-200035185
Missing permission check in DomainVerificationService

Affected Systems and Versions

Product: Android
Vendor: n/a
Versions: Android-12L

Exploitation Mechanism

The vulnerability can be exploited without the need for user interaction, requiring only access to the affected service.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2021-39753.

Immediate Steps to Take

Apply security patches provided by the vendor
Monitor for any unusual activity indicating exploitation

Long-Term Security Practices

Regularly update software and firmware to the latest versions
Implement access controls to limit exposure to sensitive information

Patching and Updates

Stay informed about security advisories and promptly apply patches to address known vulnerabilities.