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Docker CLI leaks private registry credentials to registry-1.docker.io

Moderate severity GitHub Reviewed Published Oct 4, 2021 in docker/cli • Updated Jul 5, 2024

Package

gomod github.com/docker/cli (Go)

Affected versions

< 20.10.9

Patched versions

20.10.9

Description

Impact

A bug was found in the Docker CLI where running docker login my-private-registry.example.com with a misconfigured configuration file (typically ~/.docker/config.json) listing a credsStore or credHelpers that could not be executed would result in any provided credentials being sent to registry-1.docker.io rather than the intended private registry.

Patches

This bug has been fixed in Docker CLI 20.10.9. Users should update to this version as soon as possible.

Workarounds

Ensure that any configured credsStore or credHelpers entries in the configuration file reference an installed credential helper that is executable and on the PATH.

For more information

If you have any questions or comments about this advisory:

References

@thaJeztah thaJeztah published to docker/cli Oct 4, 2021
Published by the National Vulnerability Database Oct 4, 2021
Published to the GitHub Advisory Database Jun 10, 2024
Reviewed Jun 10, 2024
Last updated Jul 5, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N

EPSS score

0.120%
(47th percentile)

Weaknesses

CVE ID

CVE-2021-41092

GHSA ID

GHSA-99pg-grm5-qq3v

Source code

No known source code
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