CVE-2023-21395 : What You Need to Know

This CVE record was assigned by Google Android and published on October 30, 2023. It involves a potential vulnerability in Bluetooth that could lead to remote information disclosure over Bluetooth without requiring additional execution privileges.

Understanding CVE-2023-21395

This section will cover the essential aspects of CVE-2023-21395, including its nature and impact.

What is CVE-2023-21395?

CVE-2023-21395 is a vulnerability in Bluetooth that could result in an out-of-bounds read due to a use-after-free scenario. The flaw could allow an attacker to disclose remote information over Bluetooth without the need for user interaction or additional privileges.

The Impact of CVE-2023-21395

The impact of this vulnerability lies in the potential for unauthorized access to sensitive information transmitted over Bluetooth connections. Exploitation of this vulnerability could compromise user privacy and confidentiality.

Technical Details of CVE-2023-21395

In this section, we will delve into the specific technical details of CVE-2023-21395, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Bluetooth stems from a use-after-free scenario, leading to an out-of-bounds read. This flaw can be exploited to disclose remote information over Bluetooth connections.

Affected Systems and Versions

The vulnerability impacts Google's Android version 14, making devices running this particular version susceptible to the risk of remote information disclosure via Bluetooth.

Exploitation Mechanism

Exploiting CVE-2023-21395 involves leveraging the use-after-free condition in Bluetooth to trigger an out-of-bounds read, allowing an attacker to access sensitive information remotely.

Mitigation and Prevention

In this section, we will discuss the measures that can be taken to mitigate the risks posed by CVE-2023-21395 and prevent potential exploitation.

Immediate Steps to Take

Users and organizations are advised to disable Bluetooth connectivity on affected devices as an immediate precautionary measure. This can help mitigate the risk of remote information disclosure until a patch is available.

Long-Term Security Practices

To enhance overall security posture, it is recommended to follow best practices such as maintaining updated security configurations, conducting regular security audits, and implementing network segmentation to minimize the impact of vulnerabilities.

Patching and Updates

Google is likely to release a patch addressing CVE-2023-21395 in a future security update. Users should promptly apply the patch once it becomes available to eliminate the vulnerability and enhance the security of their Android devices.