CVE-2023-21102 : Vulnerability Insights and Analysis

This CVE-2023-21102 was published on May 15, 2023, and is related to a security vulnerability in Android that could potentially lead to a local escalation of privilege without requiring additional execution privileges.

Understanding CVE-2023-21102

This section will delve into the intricacies of CVE-2023-21102, shedding light on what it entails and its potential impact.

What is CVE-2023-21102?

The vulnerability identified as CVE-2023-21102 is located in __efi_rt_asm_wrapper of efi-rt-wrapper.S. It involves a logic error in the code that could allow an attacker to bypass shadow stack protection. Exploiting this flaw could result in a local escalation of privilege without the need for any additional execution privileges. Notably, user interaction is not required for an exploitation to occur.

The Impact of CVE-2023-21102

The impact of CVE-2023-21102 could be significant, as it enables an attacker to elevate privileges locally on affected Android systems. This type of vulnerability could potentially be exploited to gain unauthorized access or perform malicious actions on the compromised device.

Technical Details of CVE-2023-21102

In this section, we will delve deeper into the technical aspects of CVE-2023-21102, including its vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in __efi_rt_asm_wrapper of efi-rt-wrapper.S introduces a logic error that allows for the bypass of shadow stack protection, creating an avenue for privilege escalation attacks.

Affected Systems and Versions

The affected product in this CVE is Android, specifically the Android kernel. The vulnerability impacts certain versions of the Android kernel, posing a risk of privilege escalation on these systems.

Exploitation Mechanism

The exploitation of CVE-2023-21102 does not require user interaction. By leveraging the logic error in the code, an attacker could potentially exploit the vulnerability to escalate privileges locally on the target Android device.

Mitigation and Prevention

Mitigating the risks associated with CVE-2023-21102 involves taking immediate steps to address the vulnerability and implementing long-term security practices to enhance overall system resilience.

Immediate Steps to Take

It is crucial for users and administrators to stay informed about security updates related to CVE-2023-21102. Implementing patches and security updates promptly can help mitigate the risk of exploitation and safeguard the affected systems.

Long-Term Security Practices

In the long term, implementing robust security measures such as enforcing the principle of least privilege, conducting regular security audits, and promoting secure coding practices can help enhance the overall security posture of Android systems.

Patching and Updates

Staying up to date with security bulletins and patches released by Android is essential to address vulnerabilities like CVE-2023-21102. Regularly applying patches and updates can help protect systems from known security threats and vulnerabilities.