Medium severity · published Jul 22, 2020
CVE-2020-8559
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…
6.8
CVSS
6.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.1% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KU
Kubernetes · Kubernetes
1.6.0 through 1.15.0; 1.16.0 before 1.16.13; 1.17.0 before 1.17.9; 1.18.0 before 1.18.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8559
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8559
Exploit
https://github.com/kubernetes/kubernetes/issues/92914
Exploit
https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200810-0004/
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