CVE-2021-0567 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-0567, an elevation of privilege vulnerability in Android-11's isRestricted function. Learn the technical details, affected systems, and mitigation steps.
A vulnerability has been identified in the isRestricted function of RemoteViews.java in Android-11. This flaw could allow an attacker to inject font files, leading to a local privilege escalation without requiring additional execution privileges.
Understanding CVE-2021-0567
This CVE pertains to an elevation of privilege vulnerability affecting Android-11 devices.
What is CVE-2021-0567?
The vulnerability lies in the isRestricted function of RemoteViews.java in Android-11, enabling potential font file injection with a permissions bypass, facilitating local privilege escalation.
The Impact of CVE-2021-0567
If exploited, this vulnerability could result in an attacker gaining escalated privileges on the affected Android-11 systems without the need for user interaction.
Technical Details of CVE-2021-0567
This section covers the technical aspects of the CVE.
Vulnerability Description
The issue resides in the isRestricted function of RemoteViews.java, providing a means to inject font files due to a permissions bypass, which could be leveraged for local privilege escalation.
Affected Systems and Versions
The vulnerability affects devices running Android-11.
Exploitation Mechanism
By exploiting the permissions bypass in the isRestricted function of RemoteViews.java, threat actors can inject font files and achieve local privilege escalation on Android-11 devices.
Mitigation and Prevention
Let's explore the steps to mitigate the risk posed by CVE-2021-0567.
Immediate Steps to Take
Users are advised to apply security patches promptly, especially those targeting the isRestricted function of RemoteViews.java on Android-11.
Long-Term Security Practices
Adopting robust security practices, such as regular updates, security monitoring, and secure coding, can help prevent privilege escalation vulnerabilities like CVE-2021-0567.
Patching and Updates
Stay vigilant for security advisories from Google Android and promptly apply patches provided to address CVE-2021-0567.