CVE-2020-10944 : Exploit Details and Defense Strategies

HashiCorp Nomad and Nomad Enterprise up to 0.10.4 contained a cross-site scripting vulnerability that allowed arbitrary JavaScript execution in the web UI.

Understanding CVE-2020-10944

This CVE involves a security issue in HashiCorp Nomad and Nomad Enterprise versions up to 0.10.4, potentially enabling malicious JavaScript execution.

What is CVE-2020-10944?

CVE-2020-10944 is a cross-site scripting vulnerability in HashiCorp Nomad and Nomad Enterprise versions up to 0.10.4. This flaw could permit malicious files from a workload to trigger arbitrary JavaScript execution within the web UI.

The Impact of CVE-2020-10944

The vulnerability could be exploited by attackers to execute unauthorized JavaScript code within the Nomad web UI, potentially leading to various security risks and attacks.

Technical Details of CVE-2020-10944

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in HashiCorp Nomad and Nomad Enterprise versions up to 0.10.4 allowed malicious files from a workload to execute arbitrary JavaScript in the web UI.

Affected Systems and Versions

Product: HashiCorp Nomad and Nomad Enterprise
Versions affected: Up to 0.10.4

Exploitation Mechanism

Attackers could exploit this vulnerability by uploading malicious files within a workload, triggering the execution of unauthorized JavaScript in the Nomad web UI.

Mitigation and Prevention

Protecting systems from CVE-2020-10944 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade to version 0.10.5 or later to mitigate the vulnerability.
Regularly monitor and audit workloads for any suspicious or malicious files.

Long-Term Security Practices

Implement secure coding practices to prevent cross-site scripting vulnerabilities.
Educate users on safe file handling and the risks associated with executing untrusted scripts.

Patching and Updates

Ensure that all systems running HashiCorp Nomad and Nomad Enterprise are promptly updated to version 0.10.5 or above to address the vulnerability.