CVE-2021-0945 : What You Need to Know
Learn about the impact, technical details, and mitigation strategies for CVE-2021-0945, a vulnerability in the PowerVR kernel driver allowing local privilege escalation without user interaction.
This article provides insights into CVE-2021-0945, detailing its impact, technical aspects, and mitigation strategies.
Understanding CVE-2021-0945
CVE-2021-0945 is a vulnerability identified in the _PMRCreate function of the PowerVR kernel driver. The flaw allows an attacker to overwrite heap memory via PhysmemNewRamBackedPMR, enabling local privilege escalation without the need for additional execution privileges. No user interaction is required for exploitation.
What is CVE-2021-0945?
The vulnerability in the PowerVR kernel driver's _PMRCreate function allows malicious actors to modify heap memory, potentially leading to local privilege escalation on the affected system.
The Impact of CVE-2021-0945
Exploitation of CVE-2021-0945 could result in an attacker gaining elevated privileges on the system without requiring any additional permissions or user interaction.
Technical Details of CVE-2021-0945
The technical details of CVE-2021-0945 include a description of the vulnerability, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability arises due to a missing bounds check in the _PMRCreate function of the PowerVR kernel driver, allowing unauthorized modification of heap memory.
Affected Systems and Versions
The vulnerability affects the Android SoC version of the PowerVR kernel driver.
Exploitation Mechanism
By exploiting the _PMRCreate function, threat actors can manipulate heap memory, leading to local privilege escalation without the need for user interaction.
Mitigation and Prevention
Understanding the mitigation strategies and prevention measures for CVE-2021-0945 is crucial to safeguarding systems from potential exploitation.
Immediate Steps to Take
Immediately applying security patches and updates, as recommended by the vendor, can help mitigate the risk associated with CVE-2021-0945.
Long-Term Security Practices
Implementing robust security practices, such as regularly updating software and monitoring for security advisories, can enhance overall system security.
Patching and Updates
Regularly checking for security bulletins and applying patches provided by the vendor is essential to address vulnerabilities like CVE-2021-0945.