CVE-2019-17052 : Vulnerability Insights and Analysis

In the Linux kernel versions 3.16 through 5.3.2, a vulnerability exists in the AF_AX25 network module that allows users without the necessary privileges to create a raw socket, potentially leading to security risks.

Understanding CVE-2019-17052

This CVE identifier pertains to a specific vulnerability in the Linux kernel versions 3.16 through 5.3.2 that impacts the AF_AX25 network module.

What is CVE-2019-17052?

CVE-2019-17052 is a privilege escalation vulnerability in the Linux kernel that enables unprivileged users to create a raw socket due to improper enforcement of the CAP_NET_RAW privilege.

The Impact of CVE-2019-17052

The vulnerability allows unauthorized users to create a raw socket, which can be exploited for malicious activities, potentially compromising system security.

Technical Details of CVE-2019-17052

This section provides more in-depth technical insights into the CVE-2019-17052 vulnerability.

Vulnerability Description

The issue lies in the ax25_create function within the AF_AX25 network module in the specified Linux kernel versions, where the CAP_NET_RAW privilege is not adequately enforced.

Affected Systems and Versions

Linux kernel versions 3.16 through 5.3.2

Exploitation Mechanism

Unauthorized users can exploit this vulnerability to create a raw socket, bypassing the necessary privileges, and potentially execute malicious actions.

Mitigation and Prevention

To address CVE-2019-17052 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Apply relevant security patches provided by the Linux kernel maintainers
Monitor system logs for any suspicious activities related to raw socket creation

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version
Implement least privilege principles to restrict unauthorized access to critical system functions

Patching and Updates

Stay informed about security advisories and updates from Linux distributions and vendors
Promptly apply patches and updates to mitigate known vulnerabilities and enhance system security