CVE-2020-8562 Detail
This vulnerability is currently awaiting analysis.
Description
As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|
Change History
1 change records found show changes
CVE Modified by Kubernetes 2/01/2022 7:15:07 AM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Removed | CWE |
Kubernetes CWE-367 |
Quick Info
CVE Dictionary Entry:
CVE-2020-8562
NVD Published Date:
02/01/2022
NVD Last Modified:
02/01/2022
Source:
Kubernetes