UBUNTU-CVE-2020-8561
- Source
- https://ubuntu.com/security/CVE-2020-8561
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8561.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-8561
- Upstream
- Withdrawn
- 2025-08-28T16:59:42Z
- Published
- 2021-09-20T17:15:00Z
- Modified
- 2025-07-14T06:45:30.611986Z
- Severity
-
- 4.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
- 4.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.
- References
Affected packages
Ubuntu:Pro:20.04:LTS / kubernetes
Package
- Name
- kubernetes
- Purl
- pkg:deb/ubuntu/kubernetes@1.0?arch=source&distro=esm-apps/focal
Ubuntu:22.04:LTS / kubernetes
Package
- Name
- kubernetes
- Purl
- pkg:deb/ubuntu/kubernetes@1.0?arch=source&distro=jammy