CVE-2023-42539 : Exploit Details and Defense Strategies

A PendingIntent hijacking vulnerability in ChallengeNotificationManager in Samsung Health prior to version 6.25 allows local attackers to access data.

Understanding CVE-2023-42539

This CVE identifier highlights a security vulnerability in Samsung Health that could be exploited by local attackers.

What is CVE-2023-42539?

CVE-2023-42539 is a PendingIntent hijacking vulnerability in ChallengeNotificationManager in Samsung Health versions before 6.25. This flaw enables local attackers to gain unauthorized access to sensitive information.

The Impact of CVE-2023-42539

The vulnerability poses a medium risk with a CVSS base score of 4.7, allowing attackers to compromise the confidentiality of user data.

Technical Details of CVE-2023-42539

The technical details of CVE-2023-42539 are as follows:

Vulnerability Description

The vulnerability is due to improper access control in ChallengeNotificationManager, leading to PendingIntent hijacking and unauthorized data access.

Affected Systems and Versions

Vendor: Samsung Mobile
Product: Samsung Health
Affected Versions: All versions prior to 6.25

Exploitation Mechanism

Local attackers can exploit this vulnerability without requiring any privileges, presenting a high attack complexity scenario.

Mitigation and Prevention

To address CVE-2023-42539 and enhance security, consider the following steps:

Immediate Steps to Take

Upgrade Samsung Health to version 6.25 or later to mitigate the vulnerability.
Monitor and restrict access to ChallengeNotificationManager to prevent unauthorized activities.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities and enhance security.
Implement strict access controls and least privilege principles to limit exposure to future exploits.

Patching and Updates

Stay informed about security advisories from Samsung Mobile and apply patches promptly to protect against emerging threats.