CVE-2019-12408 : Security Advisory and Response

An uninitialized memory bug in Apache Arrow versions 0.14.0 to 0.14.1 could lead to information disclosure when handling null values in arrays.

Understanding CVE-2019-12408

This CVE involves an issue in Apache Arrow versions 0.14.0 to 0.14.1 that could result in unintentional sharing of uninitialized memory.

What is CVE-2019-12408?

The vulnerability exists in the C++ implementation of Apache Arrow, affecting R, Python, and Ruby implementations.
It arises during the construction of arrays with null values, potentially leading to memory disclosure.

The Impact of CVE-2019-12408

Uninitialized memory could be shared if Arrow Arrays are transmitted over the network or stored in streaming IPC and file formats.

Technical Details of CVE-2019-12408

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

An uninitialized memory bug in Apache Arrow versions 0.14.0 to 0.14.1 exposes a risk of information disclosure.

Affected Systems and Versions

Product: Apache Arrow
Vendor: Apache Software Foundation
Versions: Apache Arrow 0.14.0 to 0.14.1

Exploitation Mechanism

Constructing arrays with null values triggers the uninitialized memory bug, potentially leading to data exposure.

Mitigation and Prevention

Protecting systems from CVE-2019-12408 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to Apache Arrow version 0.15.1 or later to fix the uninitialized memory vulnerabilities.
Avoid transmitting Arrow Arrays over unsecured networks or storing them in vulnerable formats.

Long-Term Security Practices

Regularly monitor and apply security patches to prevent similar vulnerabilities.
Implement network security measures to safeguard data transmission.

Patching and Updates

Ensure timely updates and patches for Apache Arrow to address security flaws.