National Vulnerability Database

National Vulnerability Database

NVD

  1. Vulnerabilities

CVE-2020-8554 Detail

Current Description

Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.


View Analysis Description

Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.0 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Nist CVSS score does not match with CNA score
CNA:  Kubernetes
Base Score:  6.3 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/kubernetes/kubernetes/issues/97076 Exploit  Third Party Advisory 
https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8 Mailing List  Third Party Advisory 
https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40@%3Ccommits.druid.apache.org%3E Mailing List  Patch  Third Party Advisory 
https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942@%3Ccommits.druid.apache.org%3E Mailing List  Patch  Third Party Advisory 
https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3@%3Ccommits.druid.apache.org%3E Mailing List  Patch  Third Party Advisory 
https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6@%3Ccommits.druid.apache.org%3E Mailing List  Patch  Third Party Advisory 
https://www.oracle.com//security-alerts/cpujul2021.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization cwe source acceptance level NIST  
CWE-283 Unverified Ownership Reference acceptance level Kubernetes  

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-8554
NVD Published Date:
01/21/2021
NVD Last Modified:
07/20/2021
Source:
Kubernetes