CVE-2020-27534
published 2020-12-30CVE-2020-27534: 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…
PriorityP427medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
1.75%
75.0th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | docker.io | — | — |
| docker | docker | < 19.03.9 | 19.03.9 |
| github.com | docker_docker | >= 0 < 19.03.9 | 19.03.9 |
| github.com | moby_moby | >= 0 < 19.03.9 | 19.03.9 |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_moby-buildx_0.4.1+azure-3_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
vendor_debian5.3LOW
vendor_msrc5.3MEDIUM
vendor_redhat5.3MEDIUM
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Red Hat
moby/buildkit: calls os.OpenFile with a potentially unsafe qemu-check temporary pathname
vendor_redhat·2020-12-31·CVSS 5.3
CVE-2020-27534 [MEDIUM] CWE-22 moby/buildkit: calls os.OpenFile with a potentially unsafe qemu-check temporary pathname
moby/buildkit: calls os.OpenFile with a potentially unsafe qemu-check temporary pathname
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.
A flaw was found in moby. Moby buildkit calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call.
Package: openshift4/ose-cli (Red Hat OpenShift Container Platform 4) - Not affected
Package: openshift4/ose-cli-artifacts (Red Hat OpenShift Container Platform 4) - Not affected
Package: openshift4/ose-hyperkube (Red Hat OpenShift Container Platform 4) - Not affected
Package: openshift4/ose-hypershift (Red Ha
Microsoft
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.Tem
vendor_msrc·2020-12-08·CVSS 5.3
CVE-2020-27534 [MEDIUM] CWE-22 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.Tem
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will
Debian
CVE-2020-27534: docker.io - util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.Op...
vendor_debian·2020·CVSS 5.3
CVE-2020-27534 [MEDIUM] CVE-2020-27534: docker.io - util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.Op...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
GHSA
Path Traversal in Moby builder
ghsa·2024-01-31
CVE-2020-27534 [MEDIUM] CWE-22 Path Traversal in Moby builder
Path Traversal in Moby builder
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
Path Traversal in Moby builder
osv·2024-01-31
CVE-2020-27534 [MEDIUM] Path Traversal in Moby builder
Path Traversal in Moby builder
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://web.archive.org/web/20200530054359/https://docs.docker.com/engine/release-notes/https://github.com/moby/buildkit/pull/1462https://github.com/moby/moby/pull/40877https://golang.org/pkg/io/ioutil/#TempDirhttps://golang.org/pkg/os/#TempDirhttp://web.archive.org/web/20200530054359/https://docs.docker.com/engine/release-notes/https://github.com/moby/buildkit/pull/1462https://github.com/moby/moby/pull/40877https://golang.org/pkg/io/ioutil/#TempDirhttps://golang.org/pkg/os/#TempDir
2020-12-30
Published