CVE-2019-1991 Explained : Impact and Mitigation

Android devices are susceptible to a buffer overflow vulnerability that could lead to remote code execution. This CVE was published on February 4, 2019.

Understanding CVE-2019-1991

This CVE affects Android devices running specific versions and poses a risk of remote code execution.

What is CVE-2019-1991?

The vulnerability lies in the btif_dm_data_copy function in btif_core.cc, potentially allowing an out-of-bounds write leading to remote code execution without additional privileges. Exploiting this issue requires user interaction.

The Impact of CVE-2019-1991

The vulnerability could be exploited to execute remote code on affected Android devices, compromising their security and integrity.

Technical Details of CVE-2019-1991

Android devices running certain versions are at risk due to a buffer overflow vulnerability.

Vulnerability Description

The btif_dm_data_copy function in btif_core.cc is susceptible to a buffer overflow, enabling an out-of-bounds write that could result in remote code execution.

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

To exploit this vulnerability, an attacker would need user interaction on the affected Android device.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-1991.

Immediate Steps to Take

Apply security patches provided by the device manufacturer promptly.
Avoid interacting with suspicious or untrusted sources or links.
Regularly update the device's operating system and applications.

Long-Term Security Practices

Implement strong security measures such as firewalls and intrusion detection systems.
Educate users about safe browsing habits and the importance of software updates.

Patching and Updates

Regularly check for and apply security updates and patches released by Android to mitigate the risk of exploitation.