CVE-2022-3867 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2022-3867, a vulnerability affecting HashiCorp Nomad and Nomad Enterprise version 1.4.0 up to 1.4.1 event stream subscribers.

Understanding CVE-2022-3867

CVE-2022-3867 is related to event stream subscribers in HashiCorp Nomad and Nomad Enterprise versions 1.4.0 up to 1.4.1 utilizing a token with TTL, resulting in continuous updates until the garbage collection of the token.

What is CVE-2022-3867?

The vulnerability in CVE-2022-3867 allows malicious actors to receive updates indefinitely through the event stream subscriber when using a token with TTL, posing a security risk to affected systems.

The Impact of CVE-2022-3867

The impact of CVE-2022-3867 is rated as low severity. However, it can lead to unauthorized access to functionalities not appropriately constrained by access control lists (ACLs), potentially compromising system security.

Technical Details of CVE-2022-3867

The vulnerability in CVE-2022-3867 is classified under CWE-613 (Insufficient Session Expiration) and CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs).

Vulnerability Description

HashiCorp Nomad and Nomad Enterprise versions 1.4.0 up to 1.4.1 event stream subscribers using a token with TTL receive updates until the garbage collection of the token, providing an avenue for potential exploitation.

Affected Systems and Versions

The affected products include HashiCorp Nomad and Nomad Enterprise, with versions 1.4.0 up to 1.4.1. Various platforms such as 64 bit, 32 bit, x86, ARM, MacOS, Windows, and Linux are impacted.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by utilizing a token with TTL to receive continuous updates through the event stream subscriber until the token is garbage collected, potentially leading to unauthorized access.

Mitigation and Prevention

It is crucial to take immediate steps to address CVE-2022-3867 and implement long-term security practices to enhance system resilience.

Immediate Steps to Take

Update to the fixed version 1.4.2 to mitigate the vulnerability. Ensure proper monitoring and access controls are in place to restrict unauthorized access.

Long-Term Security Practices

Regularly update and patch the systems, conduct security trainings, and follow best practices to prevent similar vulnerabilities in the future.

Patching and Updates

Apply the security patch provided by HashiCorp for Nomad and Nomad Enterprise versions 1.4.0 up to 1.4.1 to address the vulnerability and enhance system security.