CVE-2020-27534

Publication date 30 December 2020

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
docker.io	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release

Notes

mdeslaur

the patch looks like a windows-specific issue, the description is “Avoid creation of irrelevant temporary files on Windows.” and it basically only modified Windows code. Marking as not-affected.

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N