CVE-2021-37848 : Security Advisory and Response

A vulnerability has been identified in Pengutronix barebox through version 2021.07.0 that could potentially leak timing information due to the improper use of strncmp during hash comparison.

Understanding CVE-2021-37848

This section will cover the details of the CVE-2021-37848 vulnerability in Pengutronix barebox.

What is CVE-2021-37848?

The vulnerability in common/password.c in Pengutronix barebox through version 2021.07.0 is caused by the timing information leakage during hash comparison, which could be exploited by threat actors.

The Impact of CVE-2021-37848

The vulnerability could lead to the exposure of sensitive timing information, potentially aiding attackers in crafting further targeted attacks against affected systems.

Technical Details of CVE-2021-37848

Let's delve into the technical aspects of CVE-2021-37848 in Pengutronix barebox.

Vulnerability Description

The issue arises from the misuse of strncmp in hash comparison within common/password.c, allowing for timing information leakage.

Affected Systems and Versions

Pengutronix barebox versions up to 2021.07.0 are affected by this vulnerability, potentially putting systems at risk.

Exploitation Mechanism

Threat actors could exploit this vulnerability by leveraging the timing information leakage to launch targeted attacks or gather sensitive data.

Mitigation and Prevention

To address CVE-2021-37848 and enhance the security of Pengutronix barebox installations, follow the steps outlined below.

Immediate Steps to Take

Monitor security mailing lists and Pengutronix advisories for patches and updates.
Apply relevant security patches provided by Pengutronix to mitigate the vulnerability.

Long-Term Security Practices

Regularly update Pengutronix barebox to the latest version to incorporate security fixes.
Implement strong cryptographic measures to enhance password security and protection against timing attacks.

Patching and Updates

Stay informed about security updates and patches released by Pengutronix to address CVE-2021-37848 and other potential vulnerabilities.