CVE-2021-0903 : Security Advisory and Response

A detailed analysis of CVE-2021-0903, highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-0903

This section provides insights into the nature of the vulnerability and its implications.

What is CVE-2021-0903?

The CVE-2021-0903 vulnerability occurs in apusys, leading to a potential out-of-bounds write due to a missing bounds check. This security flaw could result in a local escalation of privilege, requiring System execution privileges without the need for user interaction.

The Impact of CVE-2021-0903

The impact of this vulnerability is significant as it could allow malicious actors to gain elevated privileges on affected systems without user intervention, posing a severe security risk.

Technical Details of CVE-2021-0903

In this section, we delve into specific technical aspects of the CVE-2021-0903 vulnerability.

Vulnerability Description

The vulnerability arises from a missing bounds check in apusys, facilitating unauthorized out-of-bounds write access that could be exploited for privilege escalation.

Affected Systems and Versions

Products like MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8195, MT8791, and MT8797 running Android versions 10.0, 11.0, and 12.0 are susceptible to CVE-2021-0903.

Exploitation Mechanism

Exploitation of CVE-2021-0903 does not require user interaction, making it a critical security concern that can be leveraged by threat actors through malicious activities.

Mitigation and Prevention

This section focuses on the steps to mitigate the risks associated with CVE-2021-0903.

Immediate Steps to Take

Immediate actions include applying patches and security updates provided by the vendor to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implementing robust security practices, such as regular security audits, network monitoring, and access controls, can enhance the overall security posture of the system.

Patching and Updates

Regularly updating the affected systems with the latest patches and fixes from the vendor is crucial to fortify the defense mechanisms against known vulnerabilities.