Vulnerability · Published Dec 30, 2020 · Assigned by mitre
CVE-2020-27534
Medium 5.3
In plain English
A medium-severity security flaw in the github.com/docker/docker package (Go). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.8%top 21.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/docker/docker | 19.03.9 | GHSA-6hwg-w5jg-9c6x |
| Go | github.com/moby/moby | 19.03.9 | GHSA-6hwg-w5jg-9c6x |
Affected products (as reported)
References
- https://github.com/moby/buildkit/pull/1462 x_refsource_MISC
- https://github.com/moby/moby/pull/40877 x_refsource_MISC
- http://web.archive.org/web/20200530054359/https://docs.docker.com/engine/release-notes/ x_refsource_MISC
- https://golang.org/pkg/io/ioutil/#TempDir x_refsource_MISC
- https://golang.org/pkg/os/#TempDir x_refsource_MISC