CVE-2023-37453 : Security Advisory and Response

An issue was discovered in the USB subsystem in the Linux kernel through 6.4.2. There is an out-of-bounds and crash in read_descriptors in drivers/usb/core/sysfs.c.

Understanding CVE-2023-37453

This CVE describes a vulnerability found in the USB subsystem of the Linux kernel.

What is CVE-2023-37453?

CVE-2023-37453 is a security issue that involves an out-of-bounds and crash vulnerability in the read_descriptors function located in drivers/usb/core/sysfs.c within the Linux kernel versions up to 6.4.2.

The Impact of CVE-2023-37453

Exploitation of this vulnerability could potentially lead to a denial of service (DoS) condition or arbitrary code execution on affected systems.

Technical Details of CVE-2023-37453

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability is due to improper input validation in the read_descriptors function, which could be exploited by an attacker to trigger a crash or execute arbitrary code.

Affected Systems and Versions

All Linux kernel versions up to 6.4.2 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted input to the affected function, leading to out-of-bounds access and a potential system crash.

Mitigation and Prevention

To secure systems against CVE-2023-37453, the following steps should be taken:

Immediate Steps to Take

Update the Linux kernel to a patched version that addresses the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update software and firmware to mitigate known vulnerabilities.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Keep the Linux kernel up to date with the latest security patches provided by the kernel developers.