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CVE-2020-8559

Good to know:

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Date: July 22, 2020

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.

Language: Go

Severity Score

Related Resources (12)

https://github.com/kubernetes/kubernetes/issues/92914
https://github.com/kubernetes/kubernetes/pull/92941
https://github.com/kubernetes/kubernetes
https://security.netapp.com/advisory/ntap-20200810-0004/
https://github.com/advisories/GHSA-33c5-9fx5-fvjm
https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
https://security.netapp.com/advisory/ntap-20200810-0004
https://bugzilla.redhat.com/show_bug.cgi?id=1851422
https://nvd.nist.gov/vuln/detail/CVE-2020-8559
https://groups.google.com/g/kubernetes-security-announce/c/JAIGG5yNROs
https://github.com/tdwyer/CVE-2020-8559
https://www.mend.io/vulnerability-database/CVE-2020-8559

Severity Score

Weakness Type (CWE)

URL Redirection to Untrusted Site ('Open Redirect')

CWE-601

Top Fix

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Upgrade Version

Upgrade to version v1.18.6,v1.17.9,v1.16.13

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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