CVE-2021-42559 : Exploit Details and Defense Strategies
Discover how authenticated users in CALDERA 2.8.1 can execute arbitrary commands via manipulated startup requirements in CVE-2021-42559. Learn about the impact, affected systems, and mitigation steps.
An issue in CALDERA 2.8.1 allows authenticated users to execute arbitrary commands via manipulated startup 'requirements'.
Understanding CVE-2021-42559
What is CVE-2021-42559?
CVE-2021-42559 is a vulnerability in CALDERA 2.8.1 that enables authenticated users to insert arbitrary commands into server startup requirements.
The Impact of CVE-2021-42559
The vulnerability allows attackers to execute unauthorized commands during server restart, posing a significant security risk.
Technical Details of CVE-2021-42559
Vulnerability Description
CALDERA 2.8.1 possesses startup 'requirements' that execute commands at server start, which can be manipulated via the REST API, enabling command injection.
Affected Systems and Versions
- Product: CALDERA 2.8.1
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The issue arises from the ability of authenticated users to modify commands through the REST API, leading to the execution of unauthorized commands.
Mitigation and Prevention
Immediate Steps to Take
- Disable REST API access if not essential
- Regularly monitor server logs for suspicious activities
Long-Term Security Practices
- Implement least privilege access for authenticated users
- Conduct security assessments to identify and patch vulnerabilities
Patching and Updates
- Apply patches and updates released by CALDERA promptly to address this vulnerability.