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)
EPSS: 0.033 (87.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Docker
- Moby — versions < 19.03.15, >= 20.0.0, < 20.10.3
- Netapp E-series_santricity_os_controller
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security-advisories@github.com (vendor-advisory, Patch, Third Party Advisory, x_refsource_GENTOO)
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.