CVE-2021-42343

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.

Risk Information

Base Score

9.8

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

Exploitation Probability

3.703

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2021-42343 are fixed in Python-dask 2021.10.0	Windows
Vulnerabilities CVE-2021-42343 are fixed in Python-distributed 2021.10.0	Windows
Vulnerabilities CVE-2021-42343 are fixed in Python-dask for linux 2021.10.0	Linux
Vulnerabilities CVE-2021-42343 are fixed in Python-distributed for linux 2021.10.0	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234