Is CVE-2021-20218 in the CISA KEV catalog?

No. CVE-2021-20218 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20218?

CVE-2021-20218 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2021-20218?

CVE-2021-20218 has an EPSS score of 1.31% (67th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20218?

Upgrade kubernetes-client to 5.0.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-20218

HIGH

7.4

CVSS v3

NVD

Description

A flaw was found in the fabric8 kubernetes-client in version 4.2.0 and after. This flaw allows a malicious pod/container to cause applications using the fabric8 kubernetes-client `copy` command to extract files outside the working path. The highest threat from this vulnerability is to integrity and system availability. This has been fixed in kubernetes-client-4.13.2 kubernetes-client-5.0.2 kubernetes-client-4.11.2 kubernetes-client-4.7.2

CWE-22Path Traversal

How to fix

Remediation Available

kubernetes-clientNVD

Affected:>= 5.0.0, < 5.0.2Fixed in:5.0.2CVE-2021-20218derived from NVD

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.31%probability of exploitation in 30 days

67thpercentile

Moderate risk: more likely to be exploited than 67% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

bugzilla.redhat.com

Related Vulnerabilities

Other CWE-22 (Path Traversal) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-23897	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-32315	High	8.6	100%	KEV	Fix
CVE-2022-29464	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-26086	Medium	5.3	100%	KEV	Fix
CVE-2021-22005	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-5902	Critical	9.8	100%	KEV + Ransom	Fix

Embed a live status badge for CVE-2021-20218

Markdown

[![CVE-2021-20218](https://tridentstack.com/cve/badge/CVE-2021-20218.svg)](https://tridentstack.com/cve/CVE-2021-20218)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-20218"><img src="https://tridentstack.com/cve/badge/CVE-2021-20218.svg" alt="CVE-2021-20218"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.