CVE-2021-0968 : Security Advisory and Response

Android devices are facing a critical vulnerability with CVE-2021-0968 where an out-of-bounds write issue in the allocator.cc file could potentially lead to remote code execution. This vulnerability affects versions Android-9, Android-10, Android-11, and Android-12, posing a serious security risk.

Understanding CVE-2021-0968

This section delves into the details of the CVE-2021-0968 vulnerability and its impact on Android devices.

What is CVE-2021-0968?

The CVE-2021-0968 vulnerability stems from an integer overflow in osi_malloc and osi_calloc functions of allocator.cc. This could allow attackers to execute malicious code remotely without requiring any additional privileges.

The Impact of CVE-2021-0968

The impact of CVE-2021-0968 is severe as it could lead to remote code execution on affected Android devices without the need for user interaction, posing a significant security threat.

Technical Details of CVE-2021-0968

In this section, we explore the technical aspects of the CVE-2021-0968 vulnerability, including the description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from an out-of-bounds write issue in the allocator.cc file, caused by an integer overflow in osi_malloc and osi_calloc functions. This flaw could be exploited for remote code execution.

Affected Systems and Versions

Android devices running versions Android-9, Android-10, Android-11, and Android-12 are impacted by CVE-2021-0968, making a large number of devices susceptible to potential attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability to achieve remote code execution on vulnerable Android devices by leveraging the out-of-bounds write issue resulting from an integer overflow.

Mitigation and Prevention

To address the CVE-2021-0968 vulnerability, immediate steps should be taken to protect Android devices and prevent potential exploitation. Additionally, implementing long-term security practices and ensuring timely patching and updates are crucial.

Immediate Steps to Take

Users and organizations should apply security patches provided by Android manufacturers promptly to mitigate the risk associated with CVE-2021-0968. It is advised to update devices to the latest software versions.

Long-Term Security Practices

Maintaining good security hygiene, such as using reputable apps, avoiding unknown sources, and being cautious with links and attachments, can reduce the risk of falling victim to exploits targeting CVE-2021-0968.

Patching and Updates

Regularly checking for and applying security updates released by Android for the affected versions is essential to keep devices protected from potential threats exploiting CVE-2021-0968.