CVE-2019-2049 : Exploit Details and Defense Strategies
Learn about CVE-2019-2049, a memory corruption vulnerability in Android's Bluetooth service, allowing local attackers to escalate privileges without user interaction.
Android Bluetooth Service Vulnerability
Understanding CVE-2019-2049
What is CVE-2019-2049?
CVE-2019-2049 is a memory corruption vulnerability in the avrcp_service.cc file's SendMediaUpdate and SendFolderUpdate functions in Android, potentially leading to a use-after-free issue.
The Impact of CVE-2019-2049
Exploiting this vulnerability could allow a local attacker to escalate privileges in the Bluetooth service without needing additional execution privileges. Notably, successful exploitation does not require user interaction.
Technical Details of CVE-2019-2049
Vulnerability Description
The vulnerability arises from a memory corruption issue in specific functions of the avrcp_service.cc file, leading to a use-after-free scenario.
Affected Systems and Versions
- Product: Android
- Versions Affected: Android-9 and earlier
Exploitation Mechanism
The vulnerability can be exploited by a local attacker to escalate privileges within the Bluetooth service without the need for additional execution privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor vendor security bulletins for updates and advisories.
Long-Term Security Practices
- Regularly update the operating system and applications to the latest versions.
- Implement strict access controls and permissions to limit potential attack surfaces.
Patching and Updates
It is crucial to install the latest security patches and updates released by Android to mitigate the CVE-2019-2049 vulnerability.