CVE-2023-46739 : Exploit Details and Defense Strategies

CubeFS is an open-source cloud-native file storage system. A vulnerability was found in the CubeFS master component in versions prior to 3.3.1 that could allow an untrusted attacker to steal user passwords by carrying out a timing attack. The root cause of the vulnerability was that CubeFS used raw string comparison of passwords. The vulnerable part of CubeFS was the UserService of the master component. The UserService gets instantiated when starting the server of the master component. The issue has been patched in v3.3.1. For impacted users, there is no other way to mitigate the issue besides upgrading.

Understanding CVE-2023-46739

This section will dive deeper into the details of CVE-2023-46739.

What is CVE-2023-46739?

CVE-2023-46739 is a vulnerability in the CubeFS master component that existed in versions before 3.3.1. It allowed attackers to potentially steal user passwords through a timing attack.

The Impact of CVE-2023-46739

The impact of this vulnerability was significant as it posed a threat to the security of user passwords stored within CubeFS.

Technical Details of CVE-2023-46739

Let's explore the technical aspects of CVE-2023-46739 in detail.

Vulnerability Description

The vulnerability stemmed from CubeFS using raw string comparison of passwords, making it susceptible to exploitation through a timing attack. The UserService of the master component was the specific area affected by this issue.

Affected Systems and Versions

CubeFS versions prior to 3.3.1 were impacted by this vulnerability, exposing user passwords to potential theft.

Exploitation Mechanism

Attackers could exploit this vulnerability by leveraging timing attacks on the vulnerable UserService component of the CubeFS master.

Mitigation and Prevention

Learn how to mitigate and prevent vulnerabilities like CVE-2023-46739 from causing harm.

Immediate Steps to Take

Impacted users are advised to upgrade CubeFS to version 3.3.1 or higher to patch the vulnerability and prevent password theft.

Long-Term Security Practices

Implement secure password handling practices and regularly update systems to protect against potential vulnerabilities like CVE-2023-46739.

Patching and Updates

Stay updated with the latest patches and security updates for CubeFS to ensure ongoing protection against known vulnerabilities.