CVE-2021-3283: Improper Privilege Management in HashiCorp Nomad
Summary
CVE-2021-3283: Improper Privilege Management in HashiCorp Nomad. Affects github.com/hashicorp/nomad across 2 version ranges.
< 0.12.10
>= 1.0.0, < 1.0.3
Fixed in 0.12.10 or 1.0.3, depending on the release line you run. How to fix ↓
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Background
HashiCorp Nomad is an open-source cluster manager and scheduler designed for deploying and managing applications across a distributed infrastructure. It provides a platform for running containerized and non-containerized applications on a variety of platforms. Nomad is written in Go and is widely used in production environments. However, versions up to 0.12.9 of Nomad and Nomad Enterprise have been found to have an improper privilege management vulnerability.
Vulnerability Detail
The vulnerability in HashiCorp Nomad allows the 'exec' and 'java' task drivers to access processes associated with other tasks on the same node. This means that an attacker with access to a task running on a node can potentially gain unauthorized access to processes belonging to other tasks on that node. This can lead to unauthorized access to sensitive information or the ability to manipulate or disrupt other tasks running on the same node. The vulnerability has been assigned a CVSS score of 7.5, indicating a high severity level.
How To Fix
Latest published version: v1.11.3 as of 22 Oct 2026
go get github.com/hashicorp/nomad@v1.11.3Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.
If you can't move to the latest
The minimum fixed version depends on the release line you run.
-
< 0.12.100.12.10go get github.com/hashicorp/nomad@v0.12.10 -
>= 1.0.0, < 1.0.31.0.3go get github.com/hashicorp/nomad@v1.0.3
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to upgrade to the fixed versions of HashiCorp Nomad.
Conclusion
In conclusion, the improper privilege management vulnerability in HashiCorp Nomad allows unauthorized access to processes associated with other tasks on the same node. This can lead to unauthorized access to sensitive information or the ability to manipulate or disrupt other tasks. It is crucial to upgrade to the fixed versions (0.12.10 or 1.0.3) to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for github.com/hashicorp/nomad →
FAQ
HashiCorp Nomad is an open-source cluster manager and scheduler designed for deploying and managing applications across a distributed infrastructure.
The vulnerability allows unauthorized access to processes associated with other tasks on the same node, potentially leading to unauthorized access to sensitive information or the ability to manipulate or disrupt other tasks.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
To fix this vulnerability, it is recommended to upgrade to the latest version of HashiCorp Nomad (0.12.10 or 1.0.3).
There is no specific workaround mentioned for this vulnerability. The recommended solution is to upgrade to the fixed versions of HashiCorp Nomad.
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/hashicorp/nomad.
