CVE-2019-11250

Kubernetes client-go logs authorization headers at debug verbosity levels

Description

The Kubernetes client-go library logs request headers at verbosity levels of 7 or higher. This can disclose credentials to unauthorized users via logs or command output. Kubernetes components (such as kube-apiserver) prior to v1.16.0, which make use of basic or bearer token authentication, and run at high verbosity levels, are affected.

Remediation

Workaround:

  • lower log verbosity levels to <= 6

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.87% Top 30%
Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Kubernetes Kubernetes
Published at:
Updated at:

References

Link Tags
https://github.com/kubernetes/kubernetes/issues/81114 third party advisory
https://security.netapp.com/advisory/ntap-20190919-0003/ third party advisory
https://access.redhat.com/errata/RHSA-2019:4052 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:4087 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2020/10/16/2 mailing list

Frequently Asked Questions

What is the severity of CVE-2019-11250?
CVE-2019-11250 has been scored as a medium severity vulnerability.
How to fix CVE-2019-11250?
As a workaround for remediating CVE-2019-11250: lower log verbosity levels to <= 6
Is CVE-2019-11250 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11250 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11250?
CVE-2019-11250 affects Kubernetes Kubernetes.
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