CVE-2023-21438 : Security Advisory and Response

This CVE record was published on February 9, 2023, and it pertains to an issue identified by Samsung Mobile. The vulnerability involves improper logic in HomeScreen before the SMR Feb-2023 Release 1, which could allow a physical attacker to access App previews protected by Secure Folder on Samsung Mobile Devices running versions R(11) and S(12).

Understanding CVE-2023-21438

This section delves into the specifics of CVE-2023-21438, its impact, technical details, and mitigation strategies.

What is CVE-2023-21438?

The vulnerability in question arises from improper logic in the HomeScreen feature of Samsung Mobile Devices, which could be exploited by a physical attacker to access App previews safeguarded by Secure Folder.

The Impact of CVE-2023-21438

With a CVSS v3.1 base score of 2.1 (Low severity), this vulnerability requires physical access to the device and user interaction. While the confidentiality impact is low, there is no availability or integrity impact.

Technical Details of CVE-2023-21438

Understanding the vulnerability and its technical aspects is crucial in addressing and preventing potential exploitation.

Vulnerability Description

The vulnerability stems from improper logic in HomeScreen, exposing App previews within the Secure Folder feature of Samsung Mobile Devices to physical attackers.

Affected Systems and Versions

Samsung Mobile Devices running versions R(11) and S(12) are impacted by this vulnerability, specifically those with software versions preceding SMR Feb-2023 Release 1.

Exploitation Mechanism

To exploit CVE-2023-21438, a physical attacker would need to interact with the device and gain access to App previews within Secure Folder.

Mitigation and Prevention

Taking immediate and proactive steps to mitigate the vulnerability and prevent potential exploitation is essential for ensuring the security of Samsung Mobile Devices.

Immediate Steps to Take

Users can enhance security by ensuring physical device security, limiting access to the device, and avoiding exposure of sensitive information through the Secure Folder feature.

Long-Term Security Practices

Implementing robust security practices, such as regular software updates, user education on device security, and secure device handling, can help prevent similar vulnerabilities in the future.

Patching and Updates

Samsung Mobile users are advised to install the SMR Feb-2023 Release 1 update and stay vigilant for future security patches to address this vulnerability and enhance the overall security of their devices.