CVE-2023-20981 Explained : Impact and Mitigation

This CVE record details a vulnerability found in the btu_ble_rc_param_req_evt function of btu_hcif.cc in Android, which could potentially result in an out-of-bounds read due to a missing bounds check. The exploitation of this vulnerability could lead to local information disclosure, requiring system execution privileges without the need for user interaction.

Understanding CVE-2023-20981

This section provides an overview of what CVE-2023-20981 entails.

What is CVE-2023-20981?

CVE-2023-20981 is a vulnerability identified in the btu_ble_rc_param_req_evt function of btu_hcif.cc in Android, which could allow an attacker to perform an out-of-bounds read due to a lack of appropriate bounds checking. Exploiting this vulnerability may result in local information disclosure where system execution privileges are necessary for successful exploitation.

The Impact of CVE-2023-20981

The impact of CVE-2023-20981 includes the potential exposure of sensitive local information without requiring user interaction. This could pose a significant risk to the confidentiality of data stored on affected Android devices.

Technical Details of CVE-2023-20981

This section delves into the technical aspects of CVE-2023-20981.

Vulnerability Description

The vulnerability in btu_ble_rc_param_req_evt of btu_hcif.cc in Android allows for an out-of-bounds read due to a missing bounds check, which can be exploited to disclose local information with system execution privileges.

Affected Systems and Versions

The affected system identified in this CVE is Android with the specific version impacted being Android-13.

Exploitation Mechanism

The exploitation of CVE-2023-20981 involves leveraging the out-of-bounds read vulnerability in the btu_ble_rc_param_req_evt function of btu_hcif.cc, potentially leading to the disclosure of sensitive local information.

Mitigation and Prevention

This section outlines steps to mitigate and prevent exploitation of CVE-2023-20981.

Immediate Steps to Take

Immediate actions to mitigate the risk associated with CVE-2023-20981 include monitoring security advisories and applying patches promptly as they become available. Additionally, considering security configurations to restrict system privileges can help minimize exposure.

Long-Term Security Practices

Implementing robust security practices such as regular security audits, educating users on safe computing practices, and maintaining up-to-date security solutions can help fortify overall defense against vulnerabilities like CVE-2023-20981.

Patching and Updates

Ensuring timely installation of security patches and updates released by Android developers is crucial in addressing vulnerabilities like CVE-2023-20981. Regularly checking for security advisories and applying recommended patches can enhance the security posture of affected systems.