CVE-2023-21080 : What You Need to Know

This CVE was published on April 19, 2023, by Google Android. It involves an out-of-bounds read vulnerability in the register_notification_rsp function of btif_rc.cc, potentially leading to local information disclosure in Android devices running specific versions.

Understanding CVE-2023-21080

This section will provide insights into the nature of CVE-2023-21080 and its potential impact on affected systems.

What is CVE-2023-21080?

CVE-2023-21080 is a vulnerability identified in the register_notification_rsp function of btif_rc.cc in Android devices. It allows attackers to perform an out-of-bounds read, which could result in local information disclosure. Notably, exploitation of this vulnerability does not require any additional execution privileges.

The Impact of CVE-2023-21080

The impact of this vulnerability lies in the potential disclosure of local information on affected Android devices. Attackers could exploit this flaw without the need for user interaction, posing a threat to user privacy and data security.

Technical Details of CVE-2023-21080

In this section, we will delve deeper into the technical aspects of CVE-2023-21080, including its vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in the register_notification_rsp function of btif_rc.cc results from a missing bounds check, leading to an out-of-bounds read. This can be exploited by threat actors to access local information on the affected Android devices.

Affected Systems and Versions

The vulnerability impacts Android devices running specific versions, including Android-11, Android-12, Android-12L, and Android-13. These versions are deemed affected by the security advisory.

Exploitation Mechanism

Exploiting CVE-2023-21080 does not require additional execution privileges or user interaction. Attackers can exploit the out-of-bounds read vulnerability to potentially access sensitive local information on Android devices.

Mitigation and Prevention

As a proactive measure to address CVE-2023-21080, it is crucial to implement effective mitigation strategies and adopt security best practices to safeguard systems against potential exploitation.

Immediate Steps to Take

System administrators and users should promptly apply security updates and patches provided by the relevant vendors to mitigate the risk associated with CVE-2023-21080. Timely updates can help address the vulnerability and enhance system security.

Long-Term Security Practices

Implementing ongoing security measures, such as regular security assessments, vulnerability scanning, and adherence to secure coding practices, can strengthen the overall security posture of systems. Promoting a culture of security awareness and proactive risk management is essential in mitigating future vulnerabilities.

Patching and Updates

Regularly monitoring security bulletins and updates from reliable sources, such as the Android Security Bulletin, can aid in staying informed about potential security vulnerabilities and recommended patches. Timely installation of patches and updates is fundamental in addressing CVE-2023-21080 and other emerging threats.