Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Anaconda | Dask | < 2021.10.0 |
References
- https://docs.dask.org/en/latest/changelog.htmlRelease NotesVendor Advisory
- https://github.com/dask/dask/tagsThird Party Advisory
- https://github.com/dask/distributed/security/advisories/GHSA-hwqr-f3v9-hwxrThird Party Advisory
- https://docs.dask.org/en/latest/changelog.htmlRelease NotesVendor Advisory
- https://github.com/dask/dask/tagsThird Party Advisory
- https://github.com/dask/distributed/security/advisories/GHSA-hwqr-f3v9-hwxrThird Party Advisory
FAQ
What is CVE-2021-42343?
CVE-2021-42343 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2021-42343?
CVE-2021-42343 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-42343?
Check the references section above for vendor advisories and patch information. Affected products include: Anaconda Dask.