Resource exhaustion in Docker
CVE-2021-21285
In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Docker
- Moby — versions < 19.03.15, >= 20.0.0, < 20.10.3
- NetApp E-Series Santricity OS Controller
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8 (Third Party Advisory)
- docs.docker.com/engine/release-notes/ (Release Notes, Vendor Advisory)
- github.com/moby/moby/releases/tag/v20.10.3 (Third Party Advisory, Release Notes)
- github.com/moby/moby/releases/tag/v19.03.15 (Third Party Advisory, Release Notes)
- github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30 (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210226-0005/ (Third Party Advisory)
- www.debian.org/security/2021/dsa-4865 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202107-23 (vendor-advisory, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21285?
- CVE-2021-21285 is a medium-severity vulnerability in Docker, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2021-02-02.
- How severe is CVE-2021-21285?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-21285 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.