CVE-2021-42343

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-42343
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-42343.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-42343
Aliases
Downstream
Related
Published
2021-10-26T11:15:07Z
Modified
2025-08-19T14:26:04.720043Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / dask.distributed

Package

Name
dask.distributed
Purl
pkg:deb/debian/dask.distributed?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2021.01.0+ds.1-2.1+deb11u1

Affected versions

2021.*

2021.01.0+ds.1-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / dask.distributed

Package

Name
dask.distributed
Purl
pkg:deb/debian/dask.distributed?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2021.09.1+ds.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / dask.distributed

Package

Name
dask.distributed
Purl
pkg:deb/debian/dask.distributed?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2021.09.1+ds.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / dask.distributed

Package

Name
dask.distributed
Purl
pkg:deb/debian/dask.distributed?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2021.09.1+ds.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/dask/dask

Affected ranges

Type
GIT
Repo
https://github.com/dask/dask
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
97494ff0d5d935e534871c9cf0d5b642fd74edb7

Affected versions

0.*

0.10.0
0.10.1
0.10.2
0.11.0
0.11.1
0.12.0
0.13.0
0.14.0
0.14.1
0.14.2
0.14.3
0.15.0
0.15.1
0.15.2
0.15.3
0.15.4
0.16.0
0.16.1
0.17.0
0.17.1
0.17.2
0.17.3
0.17.4
0.18.0
0.18.1
0.18.2
0.19.0
0.19.1
0.19.2
0.19.3
0.19.4
0.2.0
0.2.1
0.2.2
0.2.3
0.2.5
0.2.6
0.20.0
0.20.1
0.20.2
0.3.0
0.4.0
0.5.0
0.6.0
0.6.1
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.8.0
0.8.1
0.8.2
0.9.0

1.*

1.0.0
1.0.0.rc1
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.2.0
1.2.1
1.2.2

2.*

2.0.0
2.1.0
2.10.0
2.10.1
2.11.0
2.12.0
2.13.0
2.14.0
2.15.0
2.16.0
2.17.0
2.17.1
2.17.2
2.18.0
2.18.1
2.19.0
2.2.0
2.20.0
2.21.0
2.22.0
2.23.0
2.24.0
2.25.0
2.26.0
2.27.0
2.28.0
2.29.0
2.3.0
2.30.0
2.4.0
2.5.0
2.5.2
2.6.0
2.7.0
2.8.0
2.8.1
2.9.0
2.9.1
2.9.2

2020.*

2020.12.0

2021.*

2021.01.0
2021.01.1
2021.02.0
2021.03.0
2021.03.1
2021.04.0
2021.04.1
2021.05.0
2021.05.1
2021.06.0
2021.06.1
2021.06.2
2021.07.0
2021.07.1
2021.07.2
2021.08.0
2021.08.1
2021.09.0
2021.09.1

Other

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