CVE-2021-39761 Explained : Impact and Mitigation
Learn about CVE-2021-39761, an information disclosure vulnerability in Android-12L, allowing unauthorized access to app installation status and potential local data exposure. Find mitigation steps and security practices.
CVE-2021-39761 relates to an information disclosure vulnerability in Android-12L that allows determining app installation status without proper permissions, potentially leading to local information disclosure.
Understanding CVE-2021-39761
CVE-2021-39761 is a security vulnerability that allows an attacker to identify installed apps without the required permissions, resulting in potential local data exposure.
What is CVE-2021-39761?
The vulnerability in Android-12L permits the disclosure of app installation details through a side channel, posing a risk of local information leakage without the need for user interaction.
The Impact of CVE-2021-39761
The vulnerability could enable malicious actors to access sensitive local information, such as installed app details, leading to privacy breaches and potential misuse of data.
Technical Details of CVE-2021-39761
The technical aspects of the CVE provide insight into the vulnerability's description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
An information disclosure issue in Android-12L allows unauthorized access to app installation status, facilitating local information disclosure without elevated privileges or user interaction.
Affected Systems and Versions
- Product: Android
- Versions: Android-12L
Exploitation Mechanism
The vulnerability leverages side channel information disclosure to determine app installation status without the necessary permissions, potentially exposing confidential data.
Mitigation and Prevention
Addressing CVE-2021-39761 requires immediate and long-term security measures to protect systems against exploitation.
Immediate Steps to Take
- Monitor official security bulletins for updates and patches related to CVE-2021-39761.
- Implement additional access controls and permissions to restrict unauthorized app access.
- Consider security updates and configurations to mitigate information disclosure risks.
Long-Term Security Practices
- Regularly update Android devices with the latest security patches and software releases.
- Conduct security assessments to identify and remediate potential information disclosure vulnerabilities.
Patching and Updates
- Apply official patches and updates provided by Android to address the information disclosure vulnerability in Android-12L.