CVE-2021-0893 : Security Advisory and Response

This CVE-2021-0893 vulnerability affects multiple MediaTek processors running Android 10.0, 11.0, and 12.0, potentially leading to a local escalation of privilege without the need for user interaction. Read on to understand the impact, technical details, and mitigation strategies.

Understanding CVE-2021-0893

This section delves into the specifics of the vulnerability affecting MediaTek processors and the associated risk factors.

What is CVE-2021-0893?

CVE-2021-0893 exposes a memory corruption issue in apusys, allowing malicious actors to exploit a use after free scenario. The exploitation can result in a local escalation of privilege, requiring System execution privileges.

The Impact of CVE-2021-0893

The vulnerability poses a significant security risk as it enables attackers to gain elevated privileges on affected devices without user interaction, potentially leading to further exploitation.

Technical Details of CVE-2021-0893

Explore the technical aspects of the CVE-2021-0893 vulnerability, including its description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a memory corruption issue in apusys, allowing threat actors to execute a use after free attack, leading to privilege escalation.

Affected Systems and Versions

Devices powered by MediaTek processors, particularly MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8195, MT8791, MT8797, running Android 10.0, 11.0, and 12.0 are susceptible to this security flaw.

Exploitation Mechanism

Exploitation of CVE-2021-0893 does not require user interaction, making it easier for attackers to perform local privilege escalation attacks.

Mitigation and Prevention

Discover the immediate steps and long-term best practices to mitigate the CVE-2021-0893 vulnerability and protect affected systems.

Immediate Steps to Take

Users and administrators are advised to apply relevant patches promptly, such as Patch ID: ALPS05672107, to address the identified vulnerability.

Long-Term Security Practices

Implement robust security measures, such as regular security updates, network segmentation, and least privilege access, to bolster the overall system security.

Patching and Updates

Stay informed about security bulletins and updates from MediaTek to ensure timely application of patches and fixes to safeguard systems against evolving threats.