Medium
Security advisory
util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-27534
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:38 UTC · Revision 1
Source evidence
util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call.
osv:CVE-2020-27534
Complete source record
{
"id": "a696e70cef52bc0936f5af5ac960f3111e42b766b066ad460b5dae3d4b1eee5d",
"url": "https://osv.dev/vulnerability/CVE-2020-27534",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-27534",
"summary": "util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call.",
"evidence": "osv:CVE-2020-27534",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-27534",
"aliases": [
"CVE-2020-27534",
"GHSA-6hwg-w5jg-9c6x"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/docker-archive/docker-ce",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "9d988398e765e4b97f27f93c4d04b272ac64c9c7"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.03.9"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"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-2020-27534.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/docker-archive/engine",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "811a247d06e8f37cbccd2c2d9546815b912a1948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.03.9"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"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-2020-27534.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/moby/moby",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "811a247d06e8f37cbccd2c2d9546815b912a1948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.03.9"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"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",
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"v0.1.5",
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"v0.1.3",
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"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-2020-27534.json"
}
}
],
"modified": "2026-10-24T10:47:49.042211587Z",
"provider": "osv",
"references": [
"https://github.com/moby/buildkit/pull/1462",
"https://github.com/moby/moby/pull/40877",
"https://golang.org/pkg/io/ioutil/#TempDir",
"https://golang.org/pkg/os/#TempDir"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-27534",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 441567,
"published_at": "2020-12-30T23:15:15.297+00:00"
}