CVE-2021-21285

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.

• CWE-400
• CWE-754

• https://docs.docker.com/engine/release-notes/#20103Release Notes, Vendor Advisory
• https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30Patch, Third Party Advisory
• https://github.com/moby/moby/releases/tag/v19.03.15Release Notes, Third Party Advisory
• https://github.com/moby/moby/releases/tag/v20.10.3Release Notes, Third Party Advisory
• https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8Third Party Advisory
• https://security.gentoo.org/glsa/202107-23Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210226-0005/Third Party Advisory
• https://www.debian.org/security/2021/dsa-4865Third Party Advisory
• https://docs.docker.com/engine/release-notes/#20103Release Notes, Vendor Advisory
• https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30Patch, Third Party Advisory
• https://github.com/moby/moby/releases/tag/v19.03.15Release Notes, Third Party Advisory
• https://github.com/moby/moby/releases/tag/v20.10.3Release Notes, Third Party Advisory
• https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8Third Party Advisory
• https://security.gentoo.org/glsa/202107-23Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210226-0005/Third Party Advisory
• https://www.debian.org/security/2021/dsa-4865Third Party Advisory

Published

Feb 2, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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