CVE-2023-45839 : Exploit Details and Defense Strategies

Buildroot Multiple Data Integrity Vulnerabilities

Understanding CVE-2023-45839

Buildroot is affected by multiple data integrity vulnerabilities that can be exploited by a specially crafted man-in-the-middle attack to execute arbitrary commands on the builder.

What is CVE-2023-45839?

CVE-2023-45839 refers to multiple data integrity vulnerabilities in the package hash checking functionality of Buildroot versions 2023.08.1 and dev commit 622698d7847. These vulnerabilities can result in arbitrary command execution in the builder, particularly related to the

aufs-util

package.

The Impact of CVE-2023-45839

The impact of this vulnerability is rated as HIGH with a base score of 8.1, signifying significant risks to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2023-45839

These vulnerabilities are classified under CWE-494: Download of Code Without Integrity Check.

Vulnerability Description

The vulnerabilities allow a man-in-the-middle attacker to exploit the package hash checking functionality to execute arbitrary commands.

Affected Systems and Versions

Buildroot versions 2023.08.1 and dev commit 622698d7847 are affected by these data integrity vulnerabilities.

Exploitation Mechanism

A specially crafted man-in-the-middle attack is used to exploit these vulnerabilities and execute arbitrary commands on the builder.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of these vulnerabilities in Buildroot.

Immediate Steps to Take

Implementing security updates and patches released by Buildroot is essential to mitigate the risks associated with these data integrity vulnerabilities.

Long-Term Security Practices

Establishing secure coding practices and regular security assessments can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitoring for security advisories and applying relevant patches promptly can safeguard systems from potential exploits.