Executive Summary

Informations
Name CVE-2020-8562 First vendor Publication 2022-02-01
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Overall CVSS Score 3.1
Base Score 3.1 Environmental Score 3.1
impact SubScore 1.4 Temporal Score 3.1
Exploitabality Sub Score 1.6
 
Attack Vector Network Attack Complexity High
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact Low
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:P/I:N/A:N)
Cvss Base Score 3.5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8562

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 94

Sources (Detail)

https://github.com/kubernetes/kubernetes/issues/101493
https://groups.google.com/g/kubernetes-security-announce/c/-MFX60_wdOY
https://security.netapp.com/advisory/ntap-20220225-0002/
Source Url

Alert History

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Date Informations
2025-06-26 01:37:47
  • Multiple Updates
2025-06-25 12:11:42
  • Multiple Updates
2024-11-28 13:48:43
  • Multiple Updates
2024-08-02 13:19:05
  • Multiple Updates
2024-08-02 01:23:29
  • Multiple Updates
2024-02-02 02:19:40
  • Multiple Updates
2024-02-01 12:21:57
  • Multiple Updates
2023-09-05 13:13:59
  • Multiple Updates
2023-09-05 01:21:31
  • Multiple Updates
2023-09-02 13:12:47
  • Multiple Updates
2023-09-02 01:21:50
  • Multiple Updates
2023-08-22 13:05:06
  • Multiple Updates
2022-10-11 01:20:49
  • Multiple Updates
2022-03-29 21:23:08
  • Multiple Updates
2022-02-25 13:23:08
  • Multiple Updates
2022-02-08 00:22:55
  • Multiple Updates
2022-02-01 17:22:54
  • First insertion