CVE-2021-25355 : What You Need to Know

A security vulnerability, CVE-2021-25355, has been identified in Samsung Notes application versions prior to 4.2.00.22. The flaw allows local attackers to perform unauthorized actions via hijacking the PendingIntent.

Understanding CVE-2021-25355

This section dives into the details of the CVE-2021-25355 vulnerability.

What is CVE-2021-25355?

CVE-2021-25355 is a vulnerability found in Samsung Notes that enables local attackers to carry out unauthorized actions without proper permissions by exploiting insecure PendingIntent usage.

The Impact of CVE-2021-25355

The vulnerability poses a medium-severity risk with a CVSS base score of 5.5. It has a high impact on confidentiality, low privileges required for exploitation, and a local attack vector.

Technical Details of CVE-2021-25355

Explore the technical aspects of CVE-2021-25355 below.

Vulnerability Description

The flaw arises from the improper use of PendingIntent in Samsung Notes versions preceding 4.2.00.22, leading to unauthorized actions by local attackers.

Affected Systems and Versions

Samsung Notes versions less than 4.2.00.22 are vulnerable to exploitation, particularly in custom versions of the application.

Exploitation Mechanism

Local attackers can exploit this vulnerability by hijacking the PendingIntent within Samsung Notes, allowing them to execute unauthorized actions.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-25355 in this section.

Immediate Steps to Take

Users are advised to update Samsung Notes to version 4.2.00.22 or later to patch the vulnerability and prevent unauthorized actions.

Long-Term Security Practices

Implement proper authorization mechanisms and regular security updates to safeguard against similar vulnerabilities in the future.

Patching and Updates

Stay vigilant for security updates from Samsung Mobile and promptly apply patches to ensure the application's security.