CVE-2021-4326 Explained : Impact and Mitigation
Learn about CVE-2021-4326, a vulnerability in Zowe CLI allowing local actors to execute unauthorized shell commands via Imperative framework. Find out its impacts, technical details, and mitigation steps.
A vulnerability in Imperative framework allows already-privileged local actors to execute arbitrary shell commands via plugin install/update commands or maliciously formed environment variables, impacting Zowe CLI.
Understanding CVE-2021-4326
This CVE identifies a security issue in the Imperative framework that enables local actors with existing privileges to run unauthorized shell commands through certain plugin commands or manipulated environment variables.
What is CVE-2021-4326?
The CVE-2021-4326, assigned by Zowe, points out a vulnerability in Zowe CLI due to Imperative Local Command Injection, which can be exploited by locally present, already-privileged actors.
The Impact of CVE-2021-4326
The impermissible execution of arbitrary shell commands via Imperative framework in Zowe CLI may lead to unauthorized operations and compromise the integrity and confidentiality of the system.
Technical Details of CVE-2021-4326
The technical details of CVE-2021-20657 are as follows:
Vulnerability Description
The vulnerability allows local actors to execute unauthorized shell commands through plugin installation or update commands and specially crafted environment variables.
Affected Systems and Versions
The Imperative Local Command Injection vulnerability impacts Zowe versions 1.16.0 (less than 1.28.2) and version 2.0.0 (less than 2.5.0).
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging the plugin install or update commands and manipulating environment variables in Zowe CLI, allowing them to run unauthorized shell commands.
Mitigation and Prevention
To address CVE-2021-4326, consider the following steps:
Immediate Steps to Take
- Upgrade to Zowe 1.28.2 or later for versions 1.16.0.
- Upgrade to Zowe 2.5.0 or later for versions 2.0.0.
Long-Term Security Practices
- Regularly monitor and update security patches.
- Limit user privileges to reduce the impact of potential attacks.
Patching and Updates
Ensure timely installation of software updates to mitigate security risks effectively.