CVE-2023-20905 : What You Need to Know

This CVE record was published on January 24, 2023, by Google Android. The vulnerability was identified in Mfc_Transceive of phNxpExtns_MifareStd.cpp, potentially leading to an out-of-bounds write issue. This could result in a local escalation of privilege without requiring additional execution privileges, and user interaction is not necessary for exploitation.

Understanding CVE-2023-20905

This section will provide a detailed understanding of CVE-2023-20905, including the vulnerability description, impact, affected systems and versions, as well as mitigation and prevention strategies.

What is CVE-2023-20905?

CVE-2023-20905 is a vulnerability found in Mfc_Transceive of phNxpExtns_MifareStd.cpp, where a missing bounds check could allow for an out-of-bounds write. This vulnerability could be exploited to achieve local privilege escalation on affected systems.

The Impact of CVE-2023-20905

The impact of CVE-2023-20905 is concerning as it could potentially lead to unauthorized local escalation of privilege. This could allow an attacker to gain elevated access to the system without requiring additional privileges.

Technical Details of CVE-2023-20905

In this section, we will delve into the technical details of CVE-2023-20905, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in Mfc_Transceive of phNxpExtns_MifareStd.cpp arises from a missing bounds check, enabling an out-of-bounds write operation. This could be abused by attackers to escalate their privileges locally on the system.

Affected Systems and Versions

The affected product by this vulnerability is Android, specifically version Android-10. Systems running on Android-10 are at risk of exploitation if the necessary security updates are not applied.

Exploitation Mechanism

The exploitation of CVE-2023-20905 involves leveraging the out-of-bounds write capability in Mfc_Transceive of phNxpExtns_MifareStd.cpp to manipulate memory regions and elevate privileges on the local system.

Mitigation and Prevention

In this section, we will discuss the steps that can be taken to mitigate the risks associated with CVE-2023-20905 and prevent potential exploitation.

Immediate Steps to Take

Immediately after discovering CVE-2023-20905, users and administrators are advised to apply security patches and updates provided by the vendor. This will help in addressing the vulnerability and reducing the risk of exploitation.

Long-Term Security Practices

As a long-term security measure, it is crucial to stay informed about security bulletins and updates released by the vendor. Regularly updating the system with the latest patches helps in strengthening the overall security posture and mitigating potential risks.

Patching and Updates

Users should ensure that their systems are running the latest version of Android and have all relevant security patches installed. Keeping the software up to date plays a vital role in safeguarding against known vulnerabilities and protecting the system from potential attacks.