An issue was discovered in the Dask distributed package before 2021.10.0 for Python. Single machine Dask clusters started with dask.distributed.LocalCluster or dask.distributed.Client (which defaults to using LocalCluster) would mistakenly configure their respective Dask workers to listen on external interfaces (typically with a randomly selected high port) rather than only on localhost. A Dask cluster created using this method (when running on a machine that has an applicable port exposed) could be used by a sophisticated attacker to achieve remote code execution.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-0050 An issue was discovered in the Dask distributed package before 2021.10.0 for Python. Single machine Dask clusters started with dask.distributed.LocalCluster or dask.distributed.Client (which defaults to using LocalCluster) would mistakenly configure their respective Dask workers to listen on external interfaces (typically with a randomly selected high port) rather than only on localhost. A Dask cluster created using this method (when running on a machine that has an applicable port exposed) could be used by a sophisticated attacker to achieve remote code execution.
Github GHSA Github GHSA GHSA-j8fq-86c5-5v2r Remote code execution in dask
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.03567}

epss

{'score': 0.03724}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T03:30:38.314Z

Reserved: 2021-10-14T00:00:00

Link: CVE-2021-42343

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-10-26T11:15:07.800

Modified: 2024-11-21T06:27:38.940

Link: CVE-2021-42343

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.