CVE-2023-21202 : Vulnerability Insights and Analysis

This CVE record pertains to a vulnerability identified as CVE-2023-21202 that was published on June 28, 2023, by Google Android. The vulnerability involves a potential out-of-bounds read in the btm_delete_stored_link_key_complete function of btm_devctl.cc, which could result in local information disclosure over Bluetooth with System execution privileges required. The affected product is Android, specifically version Android-13.

Understanding CVE-2023-21202

This section aims to provide a comprehensive understanding of the CVE-2023-21202 vulnerability.

What is CVE-2023-21202?

CVE-2023-21202 refers to a vulnerability in the Android operating system, precisely in the btm_delete_stored_link_key_complete function of btm_devctl.cc. The flaw could potentially lead to local information disclosure over Bluetooth, requiring System execution privileges for exploitation.

The Impact of CVE-2023-21202

The impact of CVE-2023-21202 is significant as it could allow malicious actors to access sensitive information locally over Bluetooth connections. This could lead to privacy breaches and potential data compromise on affected devices running Android version Android-13.

Technical Details of CVE-2023-21202

In this section, we delve into the technical aspects of CVE-2023-21202 to provide a deeper insight into the vulnerability.

Vulnerability Description

The vulnerability arises from a missing bounds check in the btm_delete_stored_link_key_complete function of btm_devctl.cc, leading to an out-of-bounds read issue. Exploiting this flaw could result in unauthorized access to local information over Bluetooth.

Affected Systems and Versions

The vulnerable system identified in this CVE is Android, specifically version Android-13. Devices running this version are susceptible to the out-of-bounds read vulnerability and potential information disclosure over Bluetooth.

Exploitation Mechanism

To exploit CVE-2023-21202, an attacker would require System execution privileges. The vulnerability does not necessitate user interaction for exploitation, increasing the severity of the risk posed by this flaw.

Mitigation and Prevention

This section focuses on measures to mitigate and prevent the exploitation of CVE-2023-21202.

Immediate Steps to Take

Users and administrators are advised to apply security patches provided by Android as soon as they become available.
Implementing additional security measures, such as disabling Bluetooth when not in use, can help mitigate the risk of exploitation.

Long-Term Security Practices

Regularly updating the Android operating system and associated applications can help mitigate future vulnerabilities and enhance overall system security.
Implementing network segmentation and access controls can prevent unauthorized access to sensitive information over Bluetooth.

Patching and Updates

It is crucial for users to stay informed about security updates released by Android for addressing CVE-2023-21202.
Promptly applying patches and updates is essential to protect devices from potential exploitation and information disclosure vulnerabilities.