CVE-2021-39664 : Exploit Details and Defense Strategies
Learn about the Android-12 vulnerability in LoadedPackage::Load of LoadedArsc.cpp, leading to potential information disclosure. Find mitigation steps and update recommendations.
Android has a vulnerability in LoadedPackage::Load of LoadedArsc.cpp, leading to possible information disclosure. This CVE affects Android-12.
Understanding CVE-2021-39664
This CVE involves a potential out of bounds read issue in Android's LoadedPackage::Load, which could result in local information exposure when processing an APK file without requiring additional execution privileges.
What is CVE-2021-39664?
The vulnerability in LoadedPackage::Load of LoadedArsc.cpp can allow an attacker to access local information by exploiting a missing bounds check during the parsing of APK files on Android-12.
The Impact of CVE-2021-39664
The vulnerability could lead to local information disclosure without the need for additional privileges, requiring user interaction for exploitation.
Technical Details of CVE-2021-39664
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue stems from a missing bounds check in LoadedPackage::Load of LoadedArsc.cpp, enabling an out of bounds read, potentially resulting in local information disclosure.
Affected Systems and Versions
- Product: Android
- Version: Android-12
Exploitation Mechanism
- Attackers exploit the vulnerability in LoadedArsc.cpp during APK file parsing on Android-12
Mitigation and Prevention
Learn how to protect systems from this vulnerability.
Immediate Steps to Take
- Apply security patches from the provider promptly
- Avoid downloading or opening suspicious files
Long-Term Security Practices
- Regularly update the Android OS and applications
- Implement security best practices for APK file handling
Patching and Updates
Stay informed about security updates and apply patches to address CVE-2021-39664.