CVE-2018-9491 Explained : Impact and Mitigation
Learn about CVE-2018-9491, a vulnerability in Android's AMediaCodecCryptoInfo_new function that could lead to remote code execution. Find out affected versions and mitigation steps.
Android AMediaCodecCryptoInfo_new Vulnerability
Understanding CVE-2018-9491
What is CVE-2018-9491?
The CVE-2018-9491 vulnerability is located in the function AMediaCodecCryptoInfo_new in NdkMediaCodec.cpp, potentially leading to an integer overflow and out-of-bounds write. Exploiting this flaw could result in remote code execution in external applications without requiring additional execution privileges. User interaction is necessary for successful exploitation.
The Impact of CVE-2018-9491
This vulnerability affects various Android versions, including Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1, and Android-9.0. The corresponding Android ID for this vulnerability is A-111603051.
Technical Details of CVE-2018-9491
Vulnerability Description
The vulnerability in AMediaCodecCryptoInfo_new can lead to an out-of-bounds write due to an integer overflow, potentially enabling remote code execution.
Affected Systems and Versions
- Product: Android
- Vendor: Google Inc.
- Versions: Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1, Android-9.0
Exploitation Mechanism
- Exploiting the vulnerability requires user interaction.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by Google for the affected Android versions.
- Avoid interacting with untrusted or suspicious content or applications.
Long-Term Security Practices
- Regularly update your Android device to the latest software version.
- Implement security best practices to minimize the risk of exploitation.
Patching and Updates
- Stay informed about security bulletins and updates from Google for Android devices.