Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-21285
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:46 UTC · Revision 1
Source evidence
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.
osv:CVE-2021-21285
Complete source record
{
"id": "9a5a711c7adde76c48b425391bf49eb9407b2d9d4873603ce1e8401e12fcca10",
"url": "https://osv.dev/vulnerability/CVE-2021-21285",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-21285",
"summary": "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.",
"evidence": "osv:CVE-2021-21285",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-21285",
"aliases": [
"CVE-2021-21285",
"GHSA-6fj5-m822-rqx8"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/docker-archive/docker-ce",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "99e3ed89195c4e551e87aad1e7453b65456b03ad"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.03.15"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v19.03.14",
"v19.03.13",
"v19.03.13-beta2",
"v19.03.13-beta1",
"v19.03.12",
"v19.03.11",
"v19.03.10",
"v19.03.9",
"v19.03.8",
"v19.03.7",
"v19.03.6",
"v19.03.6-rc2",
"v19.03.6-rc1",
"v19.03.5",
"v19.03.5-rc1",
"v19.03.5-beta2",
"v19.03.5-beta1",
"v19.03.4",
"v19.03.4-rc1",
"v19.03.3",
"v19.03.3-rc1",
"v19.03.3-beta2",
"v19.03.3-beta1",
"v19.03.2",
"v19.03.2-rc1",
"v19.03.2-beta1",
"v19.03.0",
"v19.03.0-rc3",
"v19.03.0-rc2",
"v19.03.0-beta5",
"v19.03.0-beta4",
"v19.03.0-beta3",
"v19.03.0-beta2",
"v19.03.0-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21285.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/moby/moby",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "420b1d36250f9cfdc561f086f25a213ecb669b6f"
},
{
"fixed": "46229ca1d815cfd4b50eb377ac75ad8300e13a85"
},
{
"fixed": "8d3179546e79065adefa67cc697c09d0ab137d30"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.03.15"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "20.0.0"
},
{
"fixed": "20.10.3"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "8d3179546e79065adefa67cc697c09d0ab137d30"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "420b1d36250f9cfdc561f086f25a213ecb669b6f"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v19.03.15"
},
{
"range": [
{
"fixed": "46229ca1d815cfd4b50eb377ac75ad8300e13a85"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v20.10.3"
}
]
}
}
],
"versions": [
"v20.10.2",
"v19.03.14",
"v20.10.1",
"v20.10.0",
"v20.10.0-rc2",
"v20.10.0-rc1",
"v20.10.0-beta1",
"v19.03.13",
"v19.03.13-beta2",
"v19.03.13-beta1",
"v19.03.12",
"v19.03.11",
"v19.03.10",
"v19.03.9",
"v19.03.8",
"v19.03.7",
"v19.03.6-rc2",
"v19.03.6",
"v19.03.6-rc1",
"v19.03.5",
"v19.03.5-rc1",
"v19.03.5-beta2",
"v19.03.5-beta1",
"v19.03.4-rc1",
"v19.03.4",
"v19.03.3",
"v19.03.3-rc1",
"v19.03.3-beta2",
"v19.03.3-beta1",
"v19.03.2-rc1",
"v19.03.2",
"v19.03.2-beta1",
"v19.03.1",
"v19.03.0",
"v19.03.0-rc3",
"v19.03.0-rc2",
"v19.03.0-beta5",
"v19.03.0-beta4",
"v19.03.0-beta3",
"v19.03.0-beta2",
"v19.03.0-beta1",
"v18.09.0-ce-tp0",
"v18.06.0-ce-rc1",
"docs-v1.12.0-rc4-2016-07-15",
"v0.7.2",
"v0.7.1",
"v0.7.0",
"v0.6.5",
"v0.5.0",
"v0.4.7",
"v0.4.5",
"v0.4.4",
"v0.4.2",
"v0.4.1",
"v0.3.2",
"v0.3.1",
"v0.3.0",
"v0.2.2",
"v0.2.1",
"v0.2.0",
"v0.1.8",
"v0.1.7",
"v0.1.6",
"v0.1.5",
"v0.1.4",
"v0.1.3",
"v0.1.2",
"v0.1.1",
"v0.1.0",
"upstream/0.1.3",
"0.0.3",
"upstream/0.1.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21285.json"
}
}
],
"modified": "2026-10-24T10:50:06.761731295Z",
"provider": "osv",
"references": [
"https://docs.docker.com/engine/release-notes/#20103",
"https://github.com/moby/moby/releases/tag/v19.03.15",
"https://github.com/moby/moby/releases/tag/v20.10.3",
"https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8",
"https://security.netapp.com/advisory/ntap-20210226-0005/",
"https://www.debian.org/security/2021/dsa-4865",
"https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30",
"https://security.gentoo.org/glsa/202107-23"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*"
],
"vendor_product": "docker:docker",
"extracted_events": [
{
"range": [
{
"fixed": "19.03.15"
},
{
"introduced": "20.0.0"
},
{
"fixed": "20.10.3"
},
{
"introduced": "20.0.0"
},
{
"fixed": "20.10.3"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*"
],
"vendor_product": "netapp:e-series_santricity_os_controller",
"extracted_events": [
{
"range": [
{
"introduced": "11.0"
},
{
"last_affected": "11.60.3"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-21285",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 441964,
"published_at": "2021-02-02T18:15:12.203+00:00"
}