Vulnerability CVE-2020-8554


Published: 2021-01-21

Description:
Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

Type:

CWE-863

(Incorrect Authorization)

CVSS2 => (AV:N/AC:M/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6/10
6.4/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Kubernetes -> Kubernetes 

 References:
https://github.com/kubernetes/kubernetes/issues/97076
https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8

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