id: GO-2024-2748
modules:
    - module: k8s.io/apimachinery
      versions:
        - fixed: 0.16.13
        - introduced: 0.17.0
          fixed: 0.17.9
        - introduced: 0.18.0
          fixed: 0.18.7-rc.0
      vulnerable_at: 0.18.6
      packages:
        - package: k8s.io/apimachinery/pkg/util/net
          symbols:
            - ConnectWithRedirects
        - package: k8s.io/apimachinery/pkg/util/proxy
          symbols:
            - UpgradeAwareHandler.tryUpgrade
          derived_symbols:
            - UpgradeAwareHandler.ServeHTTP
    - module: k8s.io/kubernetes
      versions:
        - fixed: 1.16.13
        - introduced: 1.17.0
          fixed: 1.17.9
        - introduced: 1.18.0
          fixed: 1.18.7
      vulnerable_at: 0.18.6
summary: Privilege Escalation in Kubernetes in k8s.io/apimachinery
description: |-
    The Kubernetes kube-apiserver is 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.
cves:
    - CVE-2020-8559
ghsas:
    - GHSA-33c5-9fx5-fvjm
references:
    - advisory: https://github.com/advisories/GHSA-33c5-9fx5-fvjm
    - web: https://bugzilla.redhat.com/show_bug.cgi?id=1851422
    - web: https://github.com/kubernetes/kubernetes/issues/92914
    - web: https://github.com/kubernetes/kubernetes/pull/92941
    - web: https://github.com/tdwyer/CVE-2020-8559
    - web: https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
    - web: https://groups.google.com/g/kubernetes-security-announce/c/JAIGG5yNROs
    - web: https://security.netapp.com/advisory/ntap-20200810-0004
source:
    id: GHSA-33c5-9fx5-fvjm
    created: 2024-05-17T15:54:30.22341-04:00
review_status: REVIEWED