Is CVE-2021-21285 in the CISA KEV catalog?

No. CVE-2021-21285 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21285?

CVE-2021-21285 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-21285?

CVE-2021-21285 has an EPSS score of 3.29% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21285?

Upgrade docker.io on debian 11 to 20.10.3+dfsg1-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-21285

MEDIUMEPSS 87th pctl

6.5

CVSS v3

NVD

Description

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.

CWE-400Resource Exhaustion CWE-754

How to fix

Remediation Available

docker.ioDebian

Fixed in:20.10.3+dfsg1-1CVE-2021-21285

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

3.29%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch2

Vendor Advisory1

docs.docker.com

Third-Party Advisory5

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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.