CVE-2020-8554: Incorrect Authorization
(updated )
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.
References
- github.com/advisories/GHSA-j9wf-vvm6-4r9w
- github.com/kubernetes/kubernetes/issues/97076
- github.com/kubernetes/kubernetes/issues/97110
- groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8
- lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40@%3Ccommits.druid.apache.org%3E
- lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942@%3Ccommits.druid.apache.org%3E
- lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3@%3Ccommits.druid.apache.org%3E
- lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6@%3Ccommits.druid.apache.org%3E
- nvd.nist.gov/vuln/detail/CVE-2020-8554
- www.oracle.com//security-alerts/cpujul2021.html
- www.oracle.com/security-alerts/cpujan2022.html
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