CVE-2020-27534
Published: 30 December 2020
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.
Priority
Medium
CVSS 3 base score: 5.3
Status
| Package | Release | Status |
|---|---|---|
|
docker.io Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.04 (Hirsute Hippo) |
Not vulnerable
|
|
| Ubuntu 20.10 (Groovy Gorilla) |
Not vulnerable
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Not vulnerable
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Not vulnerable
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
Notes
| Author | Note |
|---|---|
| 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. |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27534
- http://web.archive.org/web/20200530054359/https://docs.docker.com/engine/release-notes/
- 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
- NVD
- Launchpad
- Debian