CVE-2019-2039 : Exploit Details and Defense Strategies

Android devices are affected by a vulnerability that could lead to information disclosure without additional privileges.

Understanding CVE-2019-2039

This CVE identifies a potential issue in the rw_i93_sm_detect_ndef function in the rw_i93.cc file on Android devices.

What is CVE-2019-2039?

The vulnerability in rw_i93_sm_detect_ndef could allow an attacker to read data beyond defined boundaries, potentially leading to the disclosure of local information without needing extra execution privileges. Exploitation requires user interaction.

The Impact of CVE-2019-2039

The vulnerability could result in the disclosure of local information on affected Android devices without requiring additional execution privileges.

Technical Details of CVE-2019-2039

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The rw_i93_sm_detect_ndef function in rw_i93.cc lacks proper bounds checking, allowing potential out-of-bound reads.

Affected Systems and Versions

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

Exploitation Mechanism

Exploiting this vulnerability requires user interaction due to the nature of the issue.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2019-2039:

Immediate Steps to Take

Apply security patches provided by the device manufacturer.
Avoid interacting with unknown or untrusted NFC tags.

Long-Term Security Practices

Regularly update your device's operating system and applications.
Implement security best practices such as using trusted sources for apps and data.

Patching and Updates

Ensure your Android device is up to date with the latest security patches to mitigate the risk of exploitation.