CVE-2020-8559
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-8559
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-8559.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 1.18.5-1 |
| debian | bullseye | fixed | 1.18.5-1 |
| debian | forky | fixed | 1.18.5-1 |
| debian | sid | fixed | 1.18.5-1 |
| debian | trixie | fixed | 1.18.5-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | k8s.io/apimachinery | <0.16.13 | 0.16.13 |
| Go | k8s.io/apimachinery | >=0.17.0,<0.17.9 | 0.17.9 |
| Go | k8s.io/apimachinery | >=0.18.0,<0.18.7 | 0.18.7 |
| Go | k8s.io/kubernetes | <1.16.13 | 1.16.13 |
| Go | k8s.io/kubernetes | >=1.17.0,<1.17.9 | 1.17.9 |
| Go | k8s.io/kubernetes | >=1.18.0,<1.18.7 | 1.18.7 |
| Go | k8s.io/apimachinery | >=0.18.0,<0.18.7-rc.0 | 0.16.13 |
References
- https://www.suse.com/security/cve/CVE-2020-8559.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-8559
- https://github.com/kubernetes/kubernetes/issues/92914
- https://github.com/kubernetes/kubernetes/pull/92941
- https://bugzilla.redhat.com/show_bug.cgi?id=1851422
- https://github.com/kubernetes/kubernetes
- https://github.com/tdwyer/CVE-2020-8559
- https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ
- https://groups.google.com/g/kubernetes-security-announce/c/JAIGG5yNROs
- https://security.netapp.com/advisory/ntap-20200810-0004
- https://github.com/advisories/GHSA-33c5-9fx5-fvjm
- https://security-tracker.debian.org/tracker/CVE-2020-8559
Verify integrity in audit chain (admin only). AS-IS.