CVE-2021-0543 : Security Advisory and Response
Learn about CVE-2021-0543 impacting Android-11, leading to an out-of-bounds write due to an integer overflow, allowing local privilege escalation without user interaction.
Android-11 is affected by a vulnerability in phNxpNciHal_ext.cc that could result in an out-of-bounds write due to an integer overflow. This CVE can lead to a local privilege escalation, requiring System execution privileges, with no user interaction needed.
Understanding CVE-2021-0543
This section provides insight into the details and impacts of CVE-2021-0543.
What is CVE-2021-0543?
CVE-2021-0543 is a vulnerability in Android-11's phNxpNciHal_ext.cc, potentially allowing an out-of-bounds write due to an integer overflow. The exploit could result in local privilege escalation without user interaction.
The Impact of CVE-2021-0543
The impact of this vulnerability is significant as it could be exploited to achieve local privilege escalation, posing a risk to device security.
Technical Details of CVE-2021-0543
This section delves into the technical aspects of the CVE, including its description, affected systems, and exploitation mechanism.
Vulnerability Description
An out-of-bounds write vulnerability in phNxpNciHal_ext.cc of Android-11, triggered by an integer overflow, allows for local privilege escalation without user interaction.
Affected Systems and Versions
The vulnerability affects Android-11 devices using phNxpNciHal_ext.cc.
Exploitation Mechanism
The exploit leverages an integer overflow in phNxpNciHal_ext.cc to enable unauthorized local privilege escalation.
Mitigation and Prevention
This section covers steps to mitigate the risks associated with CVE-2021-0543 and prevent potential exploitation.
Immediate Steps to Take
Users should stay updated on security bulletins and apply relevant patches promptly to protect against local privilege escalation.
Long-Term Security Practices
Adopting security best practices, such as avoiding untrusted sources and regularly updating software, can enhance overall device security.
Patching and Updates
Regularly check for security updates from Android and apply patches to address known vulnerabilities and enhance system security.