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moby docker daemon crash during image pull of malicious image

Moderate severity GitHub Reviewed Published Feb 2, 2021 in moby/moby • Updated Jun 10, 2024

Package

gomod github.com/moby/moby (Go)

Affected versions

< 19.3.15
>= 20.10.0-beta1, < 20.10.3

Patched versions

19.3.15
20.10.3

Description

Impact

Pulling an intentionally malformed Docker image manifest crashes the dockerd daemon.

Patches

Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.

Credits

Maintainers would like to thank Josh Larsen, Ian Coldwater, Duffie Cooley, Rory McCune for working on the vulnerability and Brad Geesaman for responsibly disclosing it to security@docker.com.

References

@tiborvass tiborvass published to moby/moby Feb 2, 2021
Published by the National Vulnerability Database Feb 2, 2021
Published to the GitHub Advisory Database Jan 31, 2024
Reviewed Jan 31, 2024
Last updated Jun 10, 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
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS score

1.078%
(84th percentile)

Weaknesses

CVE ID

CVE-2021-21285

GHSA ID

GHSA-6fj5-m822-rqx8

Source code

No known source code

Credits

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