CVE-2021-39739 : Exploit Details and Defense Strategies
This article provides insights into CVE-2021-39739, an Android-12L vulnerability in ArrayMap leading to SMS content leak and local information disclosure. Learn about the impact and mitigation steps.
Android-12L has a vulnerability in ArrayMap that could result in information disclosure. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2021-39739
This CVE involves an information disclosure vulnerability in Android-12L's ArrayMap, potentially leading to the leak of SMS message content.
What is CVE-2021-39739?
- Type: Information Disclosure
- Product: Android
- Affected Version: Android-12L
The Impact of CVE-2021-39739
The vulnerability could allow unauthorized access to the content of SMS messages, leading to local information disclosure. Exploitation requires system execution privileges without user interaction.
Technical Details of CVE-2021-39739
Android-12L's ArrayMap vulnerability has the following technical aspects:
Vulnerability Description
- Leak of SMS message content due to log information exposure
Affected Systems and Versions
- Product: Android
- Affected Version: Android-12L
Exploitation Mechanism
- Requires System execution privileges
- No user interaction needed for exploitation
Mitigation and Prevention
To protect against CVE-2021-39739, consider the following steps:
Immediate Steps to Take
- Apply security patches provided by the vendor
- Monitor for any unauthorized access to SMS messages
Long-Term Security Practices
- Regularly update device software
- Implement proper access control measures
Patching and Updates
- Keep the Android operating system up to date
- Stay informed about security bulletins and advisories