CVE-2023-43651 Explained : Impact and Mitigation

A critical vulnerability has been identified in JumpServer that allows remote code execution on the host system via MongoDB shell in JumpServer.

Understanding CVE-2023-43651

This CVE involves improper control of code generation, leading to remote code execution with high severity.

What is CVE-2023-43651?

JumpServer, an open source bastion host, is susceptible to remote code execution by an authenticated user exploiting a vulnerability in MongoDB sessions. This can allow the execution of arbitrary commands and potentially gain root privileges on the system.

The Impact of CVE-2023-43651

The impact of this vulnerability is severe with high confidentiality, integrity, and availability impacts. An attacker can exploit this vulnerability to execute commands remotely, posing a significant risk to affected systems.

Technical Details of CVE-2023-43651

This section covers the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability allows an authenticated user to execute arbitrary commands through the MongoDB session in JumpServer, potentially leading to remote code execution and unauthorized access.

Affected Systems and Versions

JumpServer versions ranging from >= 2.0.0 to < 2.28.20 and >= 3.0.0 to < 3.7.1 are affected by this vulnerability. Systems within these version ranges are at risk of exploitation.

Exploitation Mechanism

By logging into the authorized MongoDB database via the WEB CLI interface of the koko component, an attacker can exploit the MongoDB session to execute arbitrary commands, enabling remote code execution.

Mitigation and Prevention

To address CVE-2023-43651, immediate steps to take, long-term security practices, and the importance of patching and updates are discussed below.

Immediate Steps to Take

Users are strongly advised to upgrade their JumpServer installations to versions 2.28.20 or 3.7.1, which contain the necessary fixes to mitigate this vulnerability. There are no known workarounds available.

Long-Term Security Practices

Implementing strict access controls, regularly monitoring for any unauthorized activity, and staying informed about security updates are essential long-term security practices to prevent similar vulnerabilities.

Patching and Updates

Regularly applying security patches, staying updated with software releases, and promptly addressing known vulnerabilities are crucial for maintaining a secure environment.