CVE-2019-2120 : What You Need to Know

Android OatFileAssistant::GenerateOatFile function vulnerability

Understanding CVE-2019-2120

This CVE involves a potential file corruption issue in the OatFileAssistant::GenerateOatFile function of the oat_file_assistant.cc file in Android, leading to a local escalation of privilege without additional execution privileges.

What is CVE-2019-2120?

The vulnerability stems from an insecure default value, allowing for local privilege escalation without user interaction. The affected product is Android, with specific versions at risk.

The Impact of CVE-2019-2120

The vulnerability could be exploited to achieve local privilege escalation without the need for additional execution privileges, posing a significant security risk.

Technical Details of CVE-2019-2120

Vulnerability Description

The issue lies in the OatFileAssistant::GenerateOatFile function, where an insecure default value can lead to file corruption, enabling local privilege escalation.

Affected Systems and Versions

Product: Android
Affected Versions: Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1, Android-9

Exploitation Mechanism

The vulnerability allows for local escalation of privilege without requiring additional execution privileges.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor official sources for updates and advisories regarding this vulnerability.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent exploitation of known vulnerabilities.
Implement the principle of least privilege to limit potential damage from security breaches.

Patching and Updates

Stay informed about security bulletins and updates from Android to address this vulnerability promptly.