CVE-2021-0505 : What You Need to Know
Learn about CVE-2021-0505, a privilege escalation flaw in Android-11 Settings app, enabling local privilege escalation without user interaction. Find out about impacts, technical details, and mitigation steps.
This CVE-2021-0505 concerns a vulnerability in the Settings app of Android-11 that lacks a permission check, enabling a local escalation of privilege without requiring additional execution privileges. This article provides insights into the impact, technical details, mitigation, and prevention steps for CVE-2021-0505.
Understanding CVE-2021-0505
CVE-2021-0505 is an elevation of privilege vulnerability in Android-11 due to a missing permission check in the Settings app, potentially allowing attackers to locally escalate privileges.
What is CVE-2021-0505?
The vulnerability in the Settings app of Android-11 can be exploited to disable an always-on VPN, leading to a local escalation of privilege without the need for user interaction.
The Impact of CVE-2021-0505
CVE-2021-0505 poses a risk of local privilege escalation on affected Android-11 devices, potentially allowing unauthorized access to sensitive information or functionality.
Technical Details of CVE-2021-0505
The technical details of CVE-2021-0505 include a missing permission check in the Settings app of Android-11, which could be leveraged by attackers for privilege escalation.
Vulnerability Description
The vulnerability allows for the unauthorized disabling of an always-on VPN, enabling attackers to escalate privileges locally without requiring additional execution privileges.
Affected Systems and Versions
Android-11 devices are affected by this vulnerability, posing a risk of local privilege escalation if exploited by malicious actors.
Exploitation Mechanism
Attackers can exploit this vulnerability in the Settings app of affected Android-11 devices to disable a VPN, facilitating local privilege escalation.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-0505, users are advised to take immediate actions and implement long-term security practices.
Immediate Steps to Take
Users should stay vigilant for security updates from Android to address CVE-2021-0505 and consider alternative security measures until a patch is available.
Long-Term Security Practices
Implementing secure VPN configurations, regular system updates, and monitoring for unusual activities can enhance the overall security posture to prevent similar privilege escalation vulnerabilities.
Patching and Updates
Users are recommended to apply security patches released by Android promptly to address CVE-2021-0505 and other known vulnerabilities on Android-11 devices.