CVE-2023-21064 : Exploit Details and Defense Strategies

This CVE-2023-21064 was published on March 24, 2023, by google_android. It involves an out-of-bounds read vulnerability in DoSetPinControl of miscservice.cpp, which could potentially lead to local privilege escalation without the need for user interaction. The affected product is Android with a specific impact on the Android kernel.

Understanding CVE-2023-21064

This section will dive deeper into the details of CVE-2023-21064, including what it is, its impacts, technical aspects, and mitigation strategies.

What is CVE-2023-21064?

CVE-2023-21064 is a vulnerability in DoSetPinControl of miscservice.cpp, where an out-of-bounds read occurs due to a missing bounds check. This flaw could allow an attacker to escalate their privileges locally on the affected system, with System execution privileges required for exploitation.

The Impact of CVE-2023-21064

The impact of this vulnerability is significant as it could potentially lead to an attacker gaining elevated privileges on the system without the need for user interaction. This poses a severe security risk to the affected Android devices running the vulnerable Android kernel.

Technical Details of CVE-2023-21064

In this section, we will explore the technical aspects of CVE-2023-21064, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in DoSetPinControl of miscservice.cpp leads to an out-of-bounds read, enabling an attacker to potentially escalate their privileges locally on the affected Android devices.

Affected Systems and Versions

The primary product affected by CVE-2023-21064 is Android, specifically impacting the Android kernel. Devices running the vulnerable versions are at risk of exploitation.

Exploitation Mechanism

The exploitation of this vulnerability involves taking advantage of the out-of-bounds read issue in DoSetPinControl of miscservice.cpp to escalate privileges locally on the targeted Android device.

Mitigation and Prevention

To address CVE-2023-21064 and mitigate the associated risks, immediate steps should be taken to secure the affected systems and implement long-term security practices.

Immediate Steps to Take

Immediate actions include applying security patches or updates provided by the vendor to address the vulnerability and prevent potential exploitation by attackers.

Long-Term Security Practices

In the long term, it is essential to follow security best practices such as regularly updating software, monitoring for security vulnerabilities, and implementing security mechanisms to protect against similar threats.

Patching and Updates

Regularly applying patches and updates released by the vendor for the affected Android devices, especially those targeting the Android kernel, is crucial to remediate CVE-2023-21064 and enhance overall system security.