CVE-2023-21019 : Exploit Details and Defense Strategies

This CVE record was published on March 24, 2023, by Google Android, highlighting a vulnerability related to potential out-of-bounds read due to a heap buffer overflow in the ih264e_init_proc_ctxt of ih264e_process.c. The vulnerability could result in local information disclosure without requiring additional execution privileges or user interaction.

Understanding CVE-2023-21019

This section will delve into the details of CVE-2023-21019, shedding light on the nature of the vulnerability and its potential impact.

What is CVE-2023-21019?

CVE-2023-21019 involves a heap buffer overflow leading to a possible out-of-bounds read in ih264e_init_proc_ctxt of ih264e_process.c. This could potentially enable an attacker to disclose local information without the need for additional execution privileges or user interaction.

The Impact of CVE-2023-21019

The impact of CVE-2023-21019 is centered around the risk of local information disclosure, highlighting the importance of addressing this vulnerability promptly to prevent potential exploitation.

Technical Details of CVE-2023-21019

In this section, we will explore the technical aspects of CVE-2023-21019, including vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in ih264e_init_proc_ctxt of ih264e_process.c presents a risk of out-of-bounds read due to a heap buffer overflow, potentially allowing for local information disclosure.

Affected Systems and Versions

The affected product in this CVE is Android, specifically version Android-13. Users operating on this version may be vulnerable to the described heap buffer overflow issue.

Exploitation Mechanism

The exploitation of CVE-2023-21019 revolves around leveraging the heap buffer overflow in ih264e_init_proc_ctxt of ih264e_process.c to trigger an out-of-bounds read, facilitating local information disclosure.

Mitigation and Prevention

This section will outline the necessary steps to mitigate and prevent the exploitation of CVE-2023-21019, emphasizing immediate actions and long-term security practices.

Immediate Steps to Take

Users and administrators are advised to apply relevant patches and updates provided by the vendor promptly to address the heap buffer overflow vulnerability and prevent potential information disclosure.

Long-Term Security Practices

Incorporating robust security measures such as regular security assessments, code reviews, and threat monitoring can help enhance overall system security and prevent similar vulnerabilities in the future.

Patching and Updates

Keeping systems up to date with the latest security patches and updates is crucial in mitigating the risks posed by vulnerabilities like CVE-2023-21019. Regularly checking for and applying patches can bolster the security posture of the affected systems.