CVE-2021-39690 : What You Need to Know
Learn about CVE-2021-39690, a denial of service vulnerability in Android-12 WallpaperManagerService. Find out the impact, affected systems, and mitigation steps.
Android-12 WallpaperManagerService vulnerability allows for a persistent DoS attack due to improper input validation.
Understanding CVE-2021-39690
This CVE involves a denial of service vulnerability in the WallpaperManagerService of Android-12.
What is CVE-2021-39690?
- The vulnerability lies in setDisplayPadding function of WallpaperManagerService.java
- It can lead to a persistent DoS attack
- No user interaction required for exploitation
The Impact of CVE-2021-39690
- Local denial of service with no additional privileges required
Technical Details of CVE-2021-39690
This section covers the technical aspects of the vulnerability.
Vulnerability Description
- Vulnerability in setDisplayPadding allows for a persistent DoS
Affected Systems and Versions
- Product: Android
- Version: Android-12
Exploitation Mechanism
- Improper input validation leads to the vulnerability
Mitigation and Prevention
Steps to address the CVE-2021-39690 vulnerability.
Immediate Steps to Take
- Apply relevant security patches
- Monitor system for unusual activity
Long-Term Security Practices
- Regularly update and patch systems
- Conduct security audits and assessments
Patching and Updates
- Stay informed about security advisories
- Implement patches as soon as they are available