CVE-2017-16911 Explained : Impact and Mitigation

A vulnerability in the vhci_hcd driver in the Linux Kernel versions before 4.14.8 and 4.4.114 allows local attackers to expose kernel memory addresses by attaching a USB device over IP.

Understanding CVE-2017-16911

This CVE entry describes a security flaw in the Linux Kernel that could lead to the disclosure of sensitive kernel memory addresses.

What is CVE-2017-16911?

The vulnerability in the vhci_hcd driver in the Linux Kernel versions prior to 4.14.8 and 4.4.114 enables local attackers to reveal kernel memory addresses by connecting a USB device over IP.

The Impact of CVE-2017-16911

The exploitation of this vulnerability could result in the exposure of critical kernel memory addresses, potentially leading to further security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2017-16911

This section provides more in-depth technical insights into the CVE-2017-16911 vulnerability.

Vulnerability Description

The vhci_hcd driver in the Linux Kernel versions before 4.14.8 and 4.4.114 allows local attackers to disclose kernel memory addresses. Successful exploitation requires attaching a USB device over IP.

Affected Systems and Versions

Affected Product: Linux Kernel
Vendor: Flexera Software LLC
Vulnerable Versions: Before version 4.14.8 and 4.4.114

Exploitation Mechanism

Local attackers can exploit the vhci_hcd driver in the Linux Kernel versions prior to 4.14.8 and 4.4.114 by attaching a USB device over IP, which leads to the exposure of kernel memory addresses.

Mitigation and Prevention

To address and prevent the CVE-2017-16911 vulnerability, consider the following mitigation strategies:

Immediate Steps to Take

Apply patches provided by the Linux Kernel maintainers to update to versions 4.14.8 or 4.4.114, which contain fixes for this vulnerability.
Monitor and restrict USB device connections to prevent potential exploitation.

Long-Term Security Practices

Regularly update the Linux Kernel to the latest stable versions to ensure all security patches are applied.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from vendors like Flexera Software LLC, Debian, and Ubuntu to promptly apply relevant patches and updates to mitigate security risks.