CVE-2020-8554 Affecting kubeadm package, versions <0:1.18.10-3.el7


Severity

Recommended
high

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.24% (63rd percentile)

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  • Snyk ID SNYK-ORACLE7-KUBEADM-2595552
  • published 10 Apr 2022
  • disclosed 21 Jan 2021

How to fix?

Upgrade Oracle:7 kubeadm to version 0:1.18.10-3.el7 or higher.
This issue was patched in ELSA-2021-9028.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubeadm package and not the kubeadm package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
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NVD

5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

Red Hat

6.3 medium