CVE-2019-1989 : Exploit Details and Defense Strategies

Android versions 7.0, 7.1.1, 7.1.2, 8.0, 8.1, and 9 are affected by a vulnerability that could lead to remote code execution.

Understanding CVE-2019-1989

This CVE involves a potential out-of-bounds write issue in the

ih264d_fmt_conv_420sp_to_420p

function in the

ih264d_format_conv.c

file, posing a risk of remote code execution.

What is CVE-2019-1989?

The vulnerability in the

ih264d_fmt_conv_420sp_to_420p

function lacks a bounds check, enabling a potential out-of-bounds write. Exploiting this flaw could allow attackers to execute code remotely without needing additional privileges, albeit requiring user interaction.

The Impact of CVE-2019-1989

The vulnerability could be exploited for remote code execution on affected Android versions 7.0, 7.1.1, 7.1.2, 8.0, 8.1, and 9, potentially leading to unauthorized access and control over the device.

Technical Details of CVE-2019-1989

The technical details of this CVE are as follows:

Vulnerability Description

The vulnerability arises from a missing bounds check in the

ih264d_fmt_conv_420sp_to_420p

function, allowing an out-of-bounds write.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit this vulnerability for remote code execution without requiring additional execution privileges.

Mitigation and Prevention

To address CVE-2019-1989, consider the following steps:

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Exercise caution while interacting with untrusted sources or files.

Long-Term Security Practices

Regularly update the device's operating system and applications.
Implement security best practices to minimize the risk of exploitation.

Patching and Updates

Stay informed about security bulletins and updates from the Android platform to address vulnerabilities promptly.