CVE-2021-39670 : What You Need to Know
Gain insights into CVE-2021-39670, a denial of service vulnerability in Android affecting versions 12 and 12L. Learn the impact, technical details, and mitigation steps.
This CVE-2021-39670 article provides insights into a denial of service vulnerability affecting Android versions 12 and 12L.
Understanding CVE-2021-39670
This section delves into the key aspects of the CVE-2021-39670 vulnerability.
What is CVE-2021-39670?
CVE-2021-39670 is a vulnerability in setStream of WallpaperManager.java in Android. It allows for a possible permanent denial of service due to improper input validation.
The Impact of CVE-2021-39670
The vulnerability could result in a local denial of service, requiring user execution privileges without the need for user interaction.
Technical Details of CVE-2021-39670
Exploring the technical aspects of CVE-2021-39670.
Vulnerability Description
The vulnerability lies in setStream of WallpaperManager.java, leading to a potential permanent denial of service due to inadequate input validation.
Affected Systems and Versions
- Product: Android
- Versions: Android-12, Android-12L
Exploitation Mechanism
The vulnerability can be exploited locally, requiring user execution privileges but no user interaction.
Mitigation and Prevention
Guidelines to mitigate and prevent exploitation of CVE-2021-39670.
Immediate Steps to Take
- Apply the recommended security patches promptly.
- Monitor security bulletins for updates regarding this vulnerability.
Long-Term Security Practices
- Implement stringent input validation mechanisms.
- Regularly update systems with the latest security patches.
Patching and Updates
Stay vigilant for official patches from Android to address the CVE-2021-39670 vulnerability.