CVE-2023-21188 : Security Advisory and Response

This CVE record was published on June 28, 2023, by Google Android. The vulnerability involves a possible out-of-bounds read due to a heap buffer overflow in btm_ble_update_inq_result of btm_ble_gap.cc. It could potentially lead to local information disclosure, requiring system execution privileges but no user interaction for exploitation. The affected product is Android, specifically version Android-13.

Understanding CVE-2023-21188

This section will provide insight into the nature of CVE-2023-21188, its impact, technical details, and mitigation strategies.

What is CVE-2023-21188?

CVE-2023-21188 is a vulnerability that exists in btm_ble_update_inq_result of btm_ble_gap.cc, allowing for a possible out-of-bounds read due to a heap buffer overflow. This flaw could be exploited to disclose local information, requiring system execution privileges and not dependent on user interaction.

The Impact of CVE-2023-21188

The impact of CVE-2023-21188 is the potential for local information disclosure, which could have serious implications for the security and privacy of affected systems. The vulnerability underscores the importance of timely mitigation efforts.

Technical Details of CVE-2023-21188

Delving into the specifics of CVE-2023-21188, we explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in btm_ble_update_inq_result of btm_ble_gap.cc allows for a heap buffer overflow, leading to a possible out-of-bounds read. This flaw can be exploited to gain unauthorized access to local information.

Affected Systems and Versions

The affected product is Android, specifically version Android-13. Any systems running Android-13 are vulnerable to the exploit associated with CVE-2023-21188.

Exploitation Mechanism

The exploitation of CVE-2023-21188 relies on leveraging the heap buffer overflow in btm_ble_update_inq_result of btm_ble_gap.cc to perform an out-of-bounds read, potentially leading to unauthorized access to local information.

Mitigation and Prevention

In this section, we will discuss the steps to mitigate and prevent the exploitation of CVE-2023-21188.

Immediate Steps to Take

To address CVE-2023-21188, prompt action is necessary. System administrators should apply security patches and updates provided by the vendor to mitigate the vulnerability effectively.

Long-Term Security Practices

Implementing robust security practices, such as regular security assessments, code reviews, and threat modeling, can help in preventing similar vulnerabilities in the future.

Patching and Updates

Regularly check for security bulletins and updates from the vendor, especially for the affected product version of Android-13. Timely patching is crucial to safeguard systems from potential exploits like CVE-2023-21188.