CVE-2023-21051 Explained : Impact and Mitigation

This CVE record was published on March 24, 2023, by Google Android. It involves a vulnerability in dwc3_exynos_clk_get of dwc3-exynos.c, potentially leading to an out-of-bounds write. The impact of this vulnerability could allow for local escalation of privilege in the kernel, requiring System execution privileges without the need for user interaction.

Understanding CVE-2023-21051

This section will provide an overview of what CVE-2023-21051 entails.

What is CVE-2023-21051?

CVE-2023-21051 is a vulnerability identified in dwc3_exynos_clk_get of dwc3-exynos.c, presenting the potential for an out-of-bounds write. This flaw has the capacity to be exploited for local escalation of privilege in the kernel, with System execution privileges being necessary for successful exploitation.

The Impact of CVE-2023-21051

The impact of CVE-2023-21051 is significant as it could allow an attacker to elevate their privileges locally within the kernel. This type of vulnerability poses a serious threat to the security and integrity of affected systems.

Technical Details of CVE-2023-21051

In this section, we will delve into the technical aspects of CVE-2023-21051.

Vulnerability Description

The vulnerability in dwc3_exynos_clk_get of dwc3-exynos.c is related to an incorrect bounds check, which could result in an out-of-bounds write. This flaw creates the opportunity for a malicious actor to exploit the system and gain elevated privileges within the kernel.

Affected Systems and Versions

The affected product in this CVE is Android with the specific version being the Android kernel. Any system running this particular version is susceptible to the vulnerability identified in CVE-2023-21051.

Exploitation Mechanism

The exploitation of CVE-2023-21051 could allow an attacker to manipulate the bounds check in dwc3_exynos_clk_get, leading to an out-of-bounds write. By taking advantage of this flaw, an attacker could potentially escalate their privileges within the kernel.

Mitigation and Prevention

Here, we will discuss actions that can be taken to mitigate the risks associated with CVE-2023-21051.

Immediate Steps to Take

As a precautionary measure, users are advised to update their systems to the latest security patches provided by the vendor. Implementing timely updates can help prevent potential exploitation of the vulnerability.

Long-Term Security Practices

In the long term, it is recommended to follow security best practices such as regular security audits, implementing access controls, and maintaining up-to-date security configurations to enhance overall system security.

Patching and Updates

Users should stay informed about security advisories from the vendor and apply patches promptly to address known vulnerabilities. Regularly updating the system with the latest security fixes is crucial in safeguarding against potential security threats.