CVE-2023-21493 : Security Advisory and Response

This CVE record, assigned by Samsung Mobile, highlights an improper access control vulnerability in SemShareFileProvider before the SMR May-2023 Release 1. It exposes a risk where local attackers can gain unauthorized access to protected data on Samsung Mobile Devices running Android 11, 12, and 13.

Understanding CVE-2023-21493

This section delves into the specifics of CVE-2023-21493, detailing its nature, impact, technical aspects, and mitigation strategies.

What is CVE-2023-21493?

CVE-2023-21493 is an improper access control vulnerability discovered in SemShareFileProvider before the SMR May-2023 Release 1. The flaw enables local attackers to breach access control measures and retrieve protected data without authorization.

The Impact of CVE-2023-21493

The vulnerability presents a medium severity risk (CVSS Score 6.8) with high confidentiality impact, low integrity impact, and no availability impact. With this exploit, attackers can potentially access sensitive information on affected Samsung Mobile Devices.

Technical Details of CVE-2023-21493

Explore the technical details pertaining to CVE-2023-21493, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability involves an improper access control issue in SemShareFileProvider, allowing local attackers to bypass security measures and gain access to protected data stored on the device.

Affected Systems and Versions

Samsung Mobile Devices running Android 11, 12, and 13 are impacted by CVE-2023-21493. Specifically, devices with software versions lower than SMR May-2023 Release 1 are vulnerable to this exploit.

Exploitation Mechanism

The vulnerability leverages local access on the device to bypass access controls within SemShareFileProvider, enabling unauthorized retrieval of protected data.

Mitigation and Prevention

Learn about the necessary steps to mitigate the risks posed by CVE-2023-21493 and safeguard affected Samsung Mobile Devices against potential exploitation.

Immediate Steps to Take

Users are advised to apply security updates promptly, especially the SMR May-2023 Release 1 or later, to address the improper access control vulnerability in SemShareFileProvider and prevent unauthorized data access.

Long-Term Security Practices

Practicing secure data handling, restricting unnecessary access permissions, and staying vigilant for security updates are essential for ensuring long-term protection against similar vulnerabilities.

Patching and Updates

Regularly monitoring official security advisories from Samsung Mobile and promptly applying software updates and patches is crucial to mitigate security risks and enhance the overall protection of Samsung Mobile Devices.