CVE-2021-39727 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-39727, a vulnerability in Android kernel that could lead to information disclosure.

Understanding CVE-2021-39727

CVE-2021-39727 is a vulnerability in Android kernel that can result in information disclosure due to a race condition.

What is CVE-2021-39727?

The vulnerability exists in the eicPresentationRetrieveEntryValue function of acropora/app/identity/libeic/EicPresentation.c.
It can lead to local information disclosure, requiring System execution privileges without the need for user interaction.

The Impact of CVE-2021-39727

The vulnerability can allow attackers to access sensitive information without authentication, posing a risk to data confidentiality.

Technical Details of CVE-2021-39727

The technical details of the CVE-2021-39727 vulnerability are as follows:

Vulnerability Description

Type: Information disclosure
CVE ID: CVE-2021-39727

Affected Systems and Versions

Product: Android
Versions: Android kernel

Exploitation Mechanism

Exploiting a race condition in eicPresentationRetrieveEntryValue function

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-39727:

Immediate Steps to Take

Apply security patches provided by the vendor
Monitor for any unauthorized access to sensitive information

Long-Term Security Practices

Regularly update the system and applications to address known vulnerabilities
Implement access control mechanisms to restrict unauthorized access

Patching and Updates

Ensure timely installation of security patches from the vendor to address the vulnerability