CVE-2021-39781 Explained : Impact and Mitigation
Discover the impact and mitigation steps for CVE-2021-39781, a vulnerability in SmsController on Android-12L leading to privilege escalation and information disclosure.
Android-12L is affected by a vulnerability in SmsController that could lead to information disclosure and privilege escalation.
Understanding CVE-2021-39781
This CVE involves a permissions bypass in SmsController on Android-12L, potentially enabling local privilege escalation without additional privileges.
What is CVE-2021-39781?
A vulnerability in SmsController on Android-12L allows for potential information disclosure due to a permissions bypass, leading to local escalation of privilege without requiring extra execution privileges.
The Impact of CVE-2021-39781
The vulnerability could result in the unauthorized disclosure of sensitive information and enable attackers to escalate privileges locally without user interaction.
Technical Details of CVE-2021-39781
The technical aspects of this CVE are as follows:
Vulnerability Description
- Located in SmsController
- Allows information disclosure
- Enables local privilege escalation
Affected Systems and Versions
- Affected Product: Android
- Affected Version: Android-12L
Exploitation Mechanism
The exploitation of this vulnerability does not require any additional execution privileges and can be done without user interaction.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-39781, consider the following:
Immediate Steps to Take
- Monitor security bulletins for patches
- Implement restrictions on SMS sending capabilities
Long-Term Security Practices
- Regularly update Android devices
- Conduct security audits and assessments periodically
Patching and Updates
Ensure that devices are promptly updated with the latest security patches released by Android.