CVE-2023-21464 : Exploit Details and Defense Strategies

This CVE involves improper access control in Samsung Calendar before versions 12.4.02.9000 in Android 13 and 12.3.08.2000 in Android 12, which allows a local attacker to configure improper status.

Understanding CVE-2023-21464

This section will cover what CVE-2023-21464 is and its impacts, as well as the technical details related to this vulnerability.

What is CVE-2023-21464?

CVE-2023-21464 pertains to a vulnerability in Samsung Calendar that results in improper access control. This flaw can be exploited by a local attacker to set improper statuses within the affected versions.

The Impact of CVE-2023-21464

The impact of this vulnerability is considered medium, with a base score of 4 according to the CVSS v3.1 scoring system. The integrity impact is low, and confidentiality and availability impacts are deemed none. The attack vector is local, with low attack complexity and no privileges required.

Technical Details of CVE-2023-21464

In this section, we will delve into the vulnerability description, the affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability is classified under CWE-281 (Improper Preservation of Permissions). It stems from the improper access control mechanisms in Samsung Calendar versions prior to 12.4.02.9000 in Android 13 and 12.3.08.2000 in Android 12.

Affected Systems and Versions

The affected product is Samsung Calendar, with versions before 12.4.02.9000 in Android 13 and 12.3.08.2000 in Android 12 being vulnerable. The vulnerability is specific to local attackers manipulating the status configurations.

Exploitation Mechanism

Local attackers can exploit this vulnerability by misusing the improper access control present in the affected versions. Through this, they can configure incorrect status settings within Samsung Calendar.

Mitigation and Prevention

This section will provide insights into the immediate steps to take, as well as long-term security practices and the importance of patching and updates.

Immediate Steps to Take

To mitigate the risks associated with CVE-2023-21464, it is crucial to update Samsung Calendar to versions 12.4.02.9000 in Android 13 and 12.3.08.2000 in Android 12 or later. Additionally, monitoring and restricting local access to the application is advisable.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and maintaining access control mechanisms are essential for long-term security resilience against similar vulnerabilities.

Patching and Updates

Regularly applying security patches and updates provided by Samsung Mobile for Samsung Calendar can help address known vulnerabilities and enhance the overall security posture of the application.