CVE-2023-21423 : Security Advisory and Response

This CVE record was published on February 9, 2023, by Samsung Mobile. It pertains to an improper authorization vulnerability identified in ChnFileShareKit before the SMR Jan-2023 Release 1. This vulnerability allows an attacker to manipulate BLE advertising without proper authorization through an unprotected action.

Understanding CVE-2023-21423

This section will delve into what CVE-2023-21423 entails and its potential impact on Samsung Mobile Devices.

What is CVE-2023-21423?

CVE-2023-21423 is an improper authorization vulnerability found in ChnFileShareKit before the SMR Jan-2023 Release 1. The vulnerability enables an attacker to take control of BLE advertising without the necessary permissions, utilizing an unprotected action.

The Impact of CVE-2023-21423

The impact of this vulnerability lies in the ability for unauthorized entities to manipulate BLE advertising on Samsung Mobile Devices. This can potentially lead to security breaches and unauthorized access to device information.

Technical Details of CVE-2023-21423

This section will provide in-depth technical information about the vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

CVE-2023-21423 involves an improper authorization issue in ChnFileShareKit, permitting attackers to control BLE advertising without proper authorization.

Affected Systems and Versions

Samsung Mobile Devices running versions S(12) and T(13) are affected by this vulnerability. Specifically, devices that have not been updated to SMR Jan-2023 Release 1 are at risk.

Exploitation Mechanism

The vulnerability in ChnFileShareKit allows attackers to manipulate BLE advertising without requiring permission, exploiting an unprotected action to carry out unauthorized activities.

Mitigation and Prevention

In order to mitigate the risks associated with CVE-2023-21423, users and organizations should take immediate steps and implement long-term security practices along with applying necessary patches and updates.

Immediate Steps to Take

Ensure Samsung Mobile Devices are updated to SMR Jan-2023 Release 1 or later to address the vulnerability.
Monitor BLE advertising activities on the devices for any suspicious behavior.

Long-Term Security Practices

Regularly check for security updates and patches provided by Samsung Mobile to protect against known vulnerabilities.
Maintain strict access control measures to prevent unauthorized access to BLE advertising features.

Patching and Updates

Apply the necessary security updates and patches released by Samsung Mobile to address CVE-2023-21423.
Stay informed about future security advisories and releases from Samsung Mobile to safeguard against potential vulnerabilities.