CVE-2023-21071 Explained : Impact and Mitigation

This CVE record, assigned by Google Android, involves a vulnerability in the dhd_prot_ioctcmplt_process function within dhd_msgbuf.c. The issue stems from inadequate input validation, potentially leading to an out-of-bounds write vulnerability. Exploitation of this vulnerability could result in local escalation of privilege, requiring System execution privileges without the need for user interaction.

Understanding CVE-2023-21071

This section delves deeper into the specifics of CVE-2023-21071.

What is CVE-2023-21071?

CVE-2023-21071 relates to a flaw in the dhd_prot_ioctcmplt_process function of dhd_msgbuf.c, resulting from improper input validation. This flaw could open up the possibility of an out-of-bounds write vulnerability.

The Impact of CVE-2023-21071

The impact of this vulnerability is significant, as successful exploitation could allow an attacker to escalate their privileges locally, potentially leading to further malicious activities on the affected system.

Technical Details of CVE-2023-21071

In this section, we provide a more detailed technical overview of CVE-2023-21071.

Vulnerability Description

The vulnerability in dhd_prot_ioctcmplt_process arises due to inadequate input validation, enabling potential out-of-bounds write access. This flaw can be exploited by an attacker to gain elevated privileges on the system.

Affected Systems and Versions

The affected product in this case is Android, specifically the Android kernel. The vulnerability impacts the Android kernel version, highlighting the importance of understanding the specific versions that are susceptible to exploitation.

Exploitation Mechanism

Exploiting this vulnerability requires a sophisticated understanding of the dhd_prot_ioctcmplt_process function and its interaction with the dhd_msgbuf.c file. Attackers could leverage this vulnerability to achieve local escalation of privilege.

Mitigation and Prevention

To address CVE-2023-21071, it's crucial to implement effective mitigation strategies and preventive measures.

Immediate Steps to Take

It is recommended to apply patches or security updates provided by the vendor promptly. Additionally, monitoring system activity for any signs of exploitation can help in detecting and responding to potential attacks.

Long-Term Security Practices

In the long term, organizations should focus on implementing robust security practices, including regular security assessments, code reviews, and ensuring proper input validation in software development processes.

Patching and Updates

Ensuring that systems are up to date with the latest security patches and updates is essential for safeguarding against known vulnerabilities like CVE-2023-21071. Regularly checking for and applying patches can help mitigate the risk of exploitation.