CVE-2017-16646 Explained : Impact and Mitigation

The Linux kernel before version 4.13.11 has a vulnerability in the dib0700_devices.c file located in drivers/media/usb/dvb-usb directory. This flaw enables a local user to disrupt the system's operations, leading to a denial of service, or potentially exploit other unknown vulnerabilities by using a specially designed USB device.

Understanding CVE-2017-16646

This CVE entry highlights a vulnerability in the Linux kernel that could be exploited by a local user to cause a denial of service or potentially trigger other impacts through a crafted USB device.

What is CVE-2017-16646?

The vulnerability in the Linux kernel, specifically in the dib0700_devices.c file, allows local users to disrupt system operations, potentially leading to a denial of service or other unknown impacts when utilizing a specially designed USB device.

The Impact of CVE-2017-16646

The vulnerability can result in a denial of service condition or potentially allow attackers to exploit other unknown vulnerabilities by leveraging a malicious USB device.

Technical Details of CVE-2017-16646

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

Vulnerability Description

The flaw in drivers/media/usb/dvb-usb/dib0700_devices.c in the Linux kernel through 4.13.11 permits local users to cause a denial of service (BUG and system crash) or potentially have unspecified other impacts via a crafted USB device.

Affected Systems and Versions

Affected systems: Linux kernel versions before 4.13.11
Affected components: dib0700_devices.c file in drivers/media/usb/dvb-usb directory

Exploitation Mechanism

The vulnerability can be exploited by a local user through the use of a specially crafted USB device to disrupt system operations or potentially trigger other unknown impacts.

Mitigation and Prevention

Protecting systems from CVE-2017-16646 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Linux kernel to version 4.13.11 or later to mitigate the vulnerability
Monitor USB device usage and restrict access to trusted devices

Long-Term Security Practices

Regularly update and patch the Linux kernel and associated components
Implement strict USB device usage policies and access controls

Patching and Updates

Apply patches provided by the Linux kernel maintainers to address the vulnerability
Stay informed about security advisories and updates from relevant vendors and sources