CVE-2023-4010 : What You Need to Know

This CVE-2023-4010 concerns a vulnerability in the USB Host Controller Driver framework in the Linux kernel, specifically related to a flaw in the usb_giveback_urb function. The vulnerability allows an attacker to trigger an infinite loop in the function by exploiting a logic loophole, resulting in a denial of service.

Understanding CVE-2023-4010

This section dives into the specific details of CVE-2023-4010, explaining the nature of the vulnerability and its potential impact.

What is CVE-2023-4010?

CVE-2023-4010 is a vulnerability found in the USB Host Controller Driver framework within the Linux kernel. The usb_giveback_urb function contains a logic loophole that, when exploited with a particular malformed descriptor file, leads to an infinite loop. This loop subsequently results in a denial of service attack.

The Impact of CVE-2023-4010

The impact of this vulnerability is categorized as moderate with a base severity rating of MEDIUM. The attack vector is physical, and the availability impact is assessed as HIGH. However, the confidentiality and integrity impacts are determined to be none, with no required privileges and no user interaction for exploitation.

Technical Details of CVE-2023-4010

In this section, we delve into the technical aspects of CVE-2023-4010, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The flaw in the usb_giveback_urb function logic allows an attacker to cause an infinite loop within the function, resulting in a denial of service condition.

Affected Systems and Versions

The vulnerability impacts various versions of Red Hat Enterprise Linux (6, 7, 8, 9), Fedora, and other systems utilizing the affected kernel versions.

Exploitation Mechanism

By providing a specific malformed descriptor file as input, an attacker can trigger the infinite loop in the usb_giveback_urb function, leading to a denial of service.

Mitigation and Prevention

To address CVE-2023-4010, it is crucial to implement immediate steps, adopt long-term security practices, and apply necessary patching and updates where available.

Immediate Steps to Take

It is recommended to monitor security advisories and apply patches provided by the respective vendors to mitigate the risk posed by this vulnerability.

Long-Term Security Practices

Incorporating secure coding practices, conducting regular security audits, and staying informed about potential vulnerabilities can enhance the overall security posture of systems.

Patching and Updates

Users are advised to apply patches released by vendors promptly to address the vulnerability and prevent potential exploitation. Regularly updating systems and software is key to maintaining a secure environment.