CVE-2021-21285

Docker daemon crash during image pull of malicious image

Description

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.16%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory docker.com
Affected: moby moby
Published at:
Updated at:

References

Link Tags
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8 third party advisory
https://docs.docker.com/engine/release-notes/#20103 release notes vendor advisory
https://github.com/moby/moby/releases/tag/v20.10.3 third party advisory release notes
https://github.com/moby/moby/releases/tag/v19.03.15 third party advisory release notes
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30 third party advisory patch
https://security.netapp.com/advisory/ntap-20210226-0005/ third party advisory
https://www.debian.org/security/2021/dsa-4865 third party advisory vendor advisory
https://security.gentoo.org/glsa/202107-23 patch vendor advisory third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21285?
CVE-2021-21285 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21285?
To fix CVE-2021-21285, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21285 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21285 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21285?
CVE-2021-21285 affects moby moby.
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