Is CVE-2020-8559 in the CISA KEV catalog?

No. CVE-2020-8559 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-8559?

CVE-2020-8559 has a CVSS v3 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2020-8559?

CVE-2020-8559 has an EPSS score of 6.10% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-8559?

Upgrade kubernetes on debian 11 to 1.18.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-8559

MEDIUMEPSS 93th pctl

6.4

CVSS v3

NVD

Description

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.

CWE-601Open Redirect

How to fix

Remediation Available

kubernetesDebian

Fixed in:1.18.5-1CVE-2020-8559

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 RequiredHigh

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

6.10%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch1

github.com

Exploit1

groups.google.com

Third-Party Advisory1

security.netapp.com

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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.