CVE-2021-0540 : What You Need to Know
Learn about CVE-2021-0540, an Android-11 vulnerability enabling out-of-bounds write attacks, leading to local privilege escalation without user interaction. Discover impact, affected systems, and mitigation steps.
This CVE-2021-0540 pertains to an elevation of privilege vulnerability in Android-11 that allows an attacker to perform an out-of-bounds write due to a missing bounds check, potentially leading to a local escalation of privilege without requiring user interaction.
Understanding CVE-2021-0540
This section dives deeper into the nature and implications of CVE-2021-0540.
What is CVE-2021-0540?
CVE-2021-0540 is a security vulnerability present in the halWrapperDataCallback of hal_wrapper.cc in Android-11. The issue stems from a missing bounds check, enabling an attacker to execute an out-of-bounds write operation.
The Impact of CVE-2021-0540
The vulnerability could be exploited for local privilege escalation, granting the attacker elevated system execution privileges. Notably, this exploit does not require any user interaction for successful execution.
Technical Details of CVE-2021-0540
This section explores the technical aspects of CVE-2021-0540.
Vulnerability Description
The vulnerability lies in halWrapperDataCallback of hal_wrapper.cc within the Android-11 environment, allowing an attacker to perform an out-of-bounds write operation.
Affected Systems and Versions
The affected product is Android-11, with the specific product ID being A-169328517.
Exploitation Mechanism
The missing bounds check in halWrapperDataCallback can be leveraged by threat actors to achieve local privilege escalation, potentially leading to severe security breaches.
Mitigation and Prevention
Here, we discuss the steps to mitigate and prevent exploitation of CVE-2021-0540.
Immediate Steps to Take
It is crucial to apply relevant security patches and updates to mitigate the risk associated with CVE-2021-0540. Additionally, users should adhere to best security practices to minimize the likelihood of exploitation.
Long-Term Security Practices
In the long run, organizations and users are advised to maintain a proactive approach towards cybersecurity, including regular security assessments, awareness training, and prompt implementation of security updates.
Patching and Updates
Regularly updating the Android operating system and associated software is essential to address known vulnerabilities like CVE-2021-0540 and enhance overall system security.