CVE-2021-0317 : Vulnerability Insights and Analysis
Learn about CVE-2021-0317 impacting Android versions 10, 11, 8.0, 8.1, and 9. Understand the risk of local privilege escalation and the importance of applying security patches promptly.
Android devices are affected by a vulnerability that could allow for local escalation of privilege without additional execution privileges. The issue is in the createOrUpdate function of Permission.java and related code. User interaction is required for exploitation.
Understanding CVE-2021-0317
This CVE affects various versions of Android operating systems and poses a risk of elevation of privilege.
What is CVE-2021-0317?
CVE-2021-0317 is a vulnerability in Android's createOrUpdate function of Permission.java, potentially leading to permission escalation without the need for extra execution privileges. The flaw requires user interaction to be exploited.
The Impact of CVE-2021-0317
The vulnerability allows local attackers to escalate privileges on affected Android devices without requiring additional execution permissions. This could lead to unauthorized access to sensitive data and functions on the device.
Technical Details of CVE-2021-0317
The technical details of this CVE include:
Vulnerability Description
In the createOrUpdate function of Permission.java and related code, a logic error exists that could be abused for local privilege escalation. The flaw does not demand additional execution privileges but does need user interaction.
Affected Systems and Versions
The vulnerability impacts multiple versions of the Android operating system, specifically Android-10, Android-11, Android-8.0, Android-8.1, and Android-9.
Exploitation Mechanism
Exploitation of this vulnerability requires user interaction. Attackers can potentially exploit this flaw to escalate privileges locally on impacted Android devices.
Mitigation and Prevention
To address CVE-2021-0317, consider the following steps:
Immediate Steps to Take
- Stay updated with security advisories from Android.
- Apply relevant security patches as soon as they are available.
Long-Term Security Practices
- Implement regular security awareness training for users.
- Use best practices for secure app development and deployment.
Patching and Updates
Google Android regularly releases security bulletins with patches to address known vulnerabilities. Stay current with updates to protect your Android devices from CVE-2021-0317.