Bug 1740434 (CVE-2019-11250)

Summary: CVE-2019-11250 kubernetes: Bearer tokens written to logs at high verbosity levels (>= 7)
Product: [Other] Security Response Reporter: Sam Fowler <sfowler>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ahardin, bleanhar, bmontgom, ccoleman, dedgar, dominik.mierzejewski, eparis, go-sig, ichavero, jbrooks, jburrell, jcajka, jchaloup, jgoulding, jokerman, mchappel, nhorman, nstielau, sponnaga, strigazi, tstclair, vbatts
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-12-16 14:09:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1740435, 1741414, 1741415, 1741416, 1741417, 1741418    
Bug Blocks: 1739999    

Description Sam Fowler 2019-08-13 01:46:21 UTC
Kubernetes requires an authentication mechanism to enforce users’ privileges. One method of authentication, bearer tokens, are opaque strings used to associate a user with their having successfully authenticated previously. Any user with possession of this token may masquerade as the original user (the “bearer”) without further authentication.

Within Kubernetes, the bearer token is captured within the hyperkube kube-apiserver system logs at high verbosity levels (--v 10). A malicious user with access to the system logs on such a system could masquerade as any user who has previously logged into the system.

Comment 1 Sam Fowler 2019-08-13 01:46:36 UTC
Created kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 1740435]

Comment 2 Sam Fowler 2019-08-13 01:47:12 UTC
Upstream Issue:


Comment 3 Sam Fowler 2019-08-15 04:37:33 UTC
Upstream Patch:


Comment 5 errata-xmlrpc 2019-12-16 13:51:48 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2019:4052 https://access.redhat.com/errata/RHSA-2019:4052

Comment 6 Product Security DevOps Team 2019-12-16 14:09:27 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 7 errata-xmlrpc 2019-12-17 02:17:22 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.1

Via RHSA-2019:4087 https://access.redhat.com/errata/RHSA-2019:4087