CVE-2021-38294 : Exploit Details and Defense Strategies

A Command Injection vulnerability exists in the getTopologyHistory service of the Apache Storm 2.x prior to 2.2.1 and Apache Storm 1.x prior to 1.2.4. A specially crafted thrift request to the Nimbus server allows Remote Code Execution (RCE) prior to authentication.

Understanding CVE-2021-38294

This CVE outlines a Shell Command Injection Vulnerability discovered in Apache Storm.

What is CVE-2021-38294?

The CVE-2021-38294 refers to a Command Injection vulnerability in Apache Storm, enabling Remote Code Execution (RCE) via a crafted thrift request to the Nimbus server.

The Impact of CVE-2021-38294

The vulnerability poses a high risk as it allows attackers to execute malicious code remotely, potentially compromising the system's integrity.

Technical Details of CVE-2021-38294

The technical details of the CVE include:

Vulnerability Description

The vulnerability allows for Command Injection via the getTopologyHistory service of Apache Storm 2.x and 1.x.

Affected Systems and Versions

Systems running Apache Storm 2.x prior to 2.2.1 and Apache Storm 1.x prior to 1.2.4 are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted thrift request to the Nimbus server, enabling them to execute arbitrary commands.

Mitigation and Prevention

For mitigation and prevention of CVE-2021-38294, consider the following:

Immediate Steps to Take

Users should upgrade their Apache Storm installations as follows:

Apache Storm 2.2.x users should upgrade to version 2.2.1 or 2.3.0
Apache Storm 2.1.x users should upgrade to version 2.1.1
Apache Storm 1.x users should upgrade to version 1.2.4

Long-Term Security Practices

Implement secure coding practices, regularly update software, and conduct security audits to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Apache Storm to address known vulnerabilities.