CVE-2020-27195 : What You Need to Know

HashiCorp Nomad and Nomad Enterprise versions 0.9.0 up to 0.12.5 are affected by a vulnerability that allows the client file sandbox feature to be subverted using specific stanzas. The issue has been addressed in versions 0.12.6, 0.11.5, and 0.10.6.

Understanding CVE-2020-27195

This CVE involves a security vulnerability in HashiCorp Nomad and Nomad Enterprise versions 0.9.0 to 0.12.5.

What is CVE-2020-27195?

CVE-2020-27195 is a vulnerability in the client file sandbox feature of HashiCorp Nomad and Nomad Enterprise versions 0.9.0 up to 0.12.5, which can be exploited through specific stanzas.

The Impact of CVE-2020-27195

The vulnerability allows for the subversion of the client file sandbox feature, potentially leading to unauthorized access or manipulation of files.

Technical Details of CVE-2020-27195

HashiCorp Nomad and Nomad Enterprise versions 0.9.0 to 0.12.5 are affected by this vulnerability.

Vulnerability Description

The client file sandbox feature in the affected versions can be subverted using template or artifact stanzas.

Affected Systems and Versions

HashiCorp Nomad and Nomad Enterprise versions 0.9.0 to 0.12.5

Exploitation Mechanism

The vulnerability can be exploited by utilizing specific stanzas within the client file sandbox feature.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2020-27195.

Immediate Steps to Take

Upgrade to the fixed versions: 0.12.6, 0.11.5, or 0.10.6
Monitor for any unauthorized file access or changes

Long-Term Security Practices

Regularly update and patch software to the latest versions
Implement access controls and monitoring mechanisms to detect unusual file activities

Patching and Updates

Ensure that all systems running HashiCorp Nomad and Nomad Enterprise are updated to versions 0.12.6, 0.11.5, or 0.10.6 to mitigate the vulnerability.