CVE-2021-41116 Explained : Impact and Mitigation
Learn about CVE-2021-41116, a command injection vulnerability in Composer on Windows. Discover impacts, affected versions, and mitigation steps. Upgrade Composer to v1.10.23 or v2.1.9 for optimum security.
Composer is a popular open-source dependency manager for the PHP language. Learn about the vulnerability, its impacts, and mitigation steps.
Understanding CVE-2021-41116
What is CVE-2021-41116?
Command injection vulnerability in Composer on Windows allows attackers to execute arbitrary commands during the installation of untrusted dependencies.
The Impact of CVE-2021-41116
This vulnerability has a base score of 8.2, posing a high risk with confidentiality impact rated as high.
Technical Details of CVE-2021-41116
Vulnerability Description
Windows users running Composer susceptible to command injection; upgrading to versions 1.10.23 or 2.1.9 is necessary.
Affected Systems and Versions
- Affected versions include:
- Composer < 1.10.23
- Composer >= 2.0, < 2.1.9
Exploitation Mechanism
- Low attack complexity
- Network attack vector
- User interaction required
Mitigation and Prevention
Immediate Steps to Take
- Upgrade Composer to version 1.10.23 or 2.1.9
- Avoid installing untrusted Composer dependencies on Windows
Long-Term Security Practices
- Regularly update Composer to the latest version
- Validate dependencies before installation
Patching and Updates
- The issue is resolved in Composer versions 1.10.23 and 2.1.9