CVE-2019-13132 : Vulnerability Insights and Analysis

In versions prior to 4.0.9, 4.1.x prior to 4.1.7, and 4.2.x prior to 4.3.2 of the ZeroMQ libzmq library, a vulnerability exists where an outsider connecting to a libzmq application using a socket with CURVE encryption/authentication enabled may lead to a stack overflow and unauthorized data manipulation.

Understanding CVE-2019-13132

This CVE involves a security issue in the ZeroMQ libzmq library that could allow unauthorized access and manipulation of data.

What is CVE-2019-13132?

CVE-2019-13132 is a vulnerability in the ZeroMQ libzmq library that affects versions before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2. It allows an outsider to connect to a libzmq application with CURVE encryption/authentication enabled, potentially resulting in a stack overflow and unauthorized data manipulation.

The Impact of CVE-2019-13132

The vulnerability could lead to a stack overflow and unauthorized data manipulation when an outsider connects to a libzmq application with CURVE encryption/authentication enabled. Users operating public servers with this configuration are at risk.

Technical Details of CVE-2019-13132

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in ZeroMQ libzmq before versions 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2 allows a remote, unauthenticated client to cause a stack overflow and overwrite the stack with arbitrary data due to a buffer overflow in the library.

Affected Systems and Versions

ZeroMQ libzmq versions before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2

Exploitation Mechanism

An outsider connecting to a libzmq application with CURVE encryption/authentication enabled

Mitigation and Prevention

Protecting systems from CVE-2019-13132 is crucial to maintaining security.

Immediate Steps to Take

Upgrade to the latest version of ZeroMQ libzmq (4.0.9, 4.1.7, or 4.3.2) to mitigate the vulnerability

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities
Implement network segmentation and access controls to limit exposure

Patching and Updates

Stay informed about security updates and patches released by ZeroMQ to address vulnerabilities