Medium severity · published Dec 30, 2020
CVE-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 with an empty first…
5.3
CVSS
1.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
Docker · Docker
before 19.03.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27534
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27534
Release Notes
http://web.archive.org/web/20200530054359/https://docs.docker.com/engine/release-notes/
Third Party Advisory
https://github.com/moby/buildkit/pull/1462
Third Party Advisory
https://github.com/moby/moby/pull/40877
Third Party Advisory
https://golang.org/pkg/io/ioutil/#TempDir
Third Party Advisory
https://golang.org/pkg/os/#TempDir
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