CVE-2021-42343
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.00% probability · 87th percentile
- CISA KEV
- Not listed
- Affected
- anaconda/dask
- Source
- cve@mitre.org
References
- https://docs.dask.org/en/latest/changelog.htmlRelease Notes, Vendor 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 Notes, Vendor Advisory
- https://github.com/dask/dask/tagsThird Party Advisory
- https://github.com/dask/distributed/security/advisories/GHSA-hwqr-f3v9-hwxrThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.