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CVE-2020-8559

MEDIUM
Published 2020-07-22T13:47:08.684571Z
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CVSS Score

V3.1
6.4
/10
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.615
probability
of exploitation in the wild

There is a 61.5% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.982
Higher than 98.2% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Kubernetes

Kubernetes

Affected Versions:

1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Privilege Escalation in Kubernetes

GHSA-33c5-9fx5-fvjm

Advisory Details

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.7 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.

Affected Packages

Go k8s.io/apimachinery
ECOSYSTEM: ≥0 <0.16.13
Go k8s.io/apimachinery
ECOSYSTEM: ≥0.17.0 <0.17.9
Go k8s.io/apimachinery
ECOSYSTEM: ≥0.18.0 <0.18.7
Go k8s.io/kubernetes
ECOSYSTEM: ≥0 <1.16.13
Go k8s.io/kubernetes
ECOSYSTEM: ≥1.17.0 <1.17.9
Go k8s.io/kubernetes
ECOSYSTEM: ≥1.18.0 <1.18.7

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-8559
WEB https://github.com/kubernetes/kubernetes/issues/92914
WEB https://github.com/kubernetes/kubernetes/pull/92941
WEB https://bugzilla.redhat.com/show_bug.cgi?id=1851422
PACKAGE https://github.com/kubernetes/kubernetes
WEB https://github.com/tdwyer/CVE-2020-8559
WEB https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
WEB https://groups.google.com/g/kubernetes-security-announce/c/JAIGG5yNROs
WEB https://security.netapp.com/advisory/ntap-20200810-0004

Advisory provided by GitHub Security Advisory Database. Published: April 24, 2024, Modified: May 20, 2024

References

https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
https://github.com/kubernetes/kubernetes/issues/92914
https://security.netapp.com/advisory/ntap-20200810-0004/
Published: 2020-07-22T13:47:08.684571Z
Last Modified: 2024-09-16T17:58:15.587Z
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