Bug 2020338 (CVE-2021-21691) - CVE-2021-21691 jenkins: Creating symbolic links is possible without the symlink permission
Summary: CVE-2021-21691 jenkins: Creating symbolic links is possible without the symli...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-21691
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2020611 2020612 2020613 2020614 2020615 2020616
Blocks: 2020347
TreeView+ depends on / blocked
 
Reported: 2021-11-04 16:01 UTC by Michael Kaplan
Modified: 2022-03-08 12:14 UTC (History)
20 users (show)

Fixed In Version: jenkins 2.319, jenkins LTS 2.303.3
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in Jenkins which failed to correctly validate permissions. This flaw allowed any user to create symbolic links regardless if they had the symlink permission. It may allow an attacker to read and write to arbitrary files on the Jenkins controller file system.
Clone Of:
Environment:
Last Closed: 2021-12-02 22:42:12 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4799 0 None None None 2021-12-02 18:35:04 UTC
Red Hat Product Errata RHSA-2021:4801 0 None None None 2021-12-01 12:26:06 UTC
Red Hat Product Errata RHSA-2021:4827 0 None None None 2021-12-02 22:01:07 UTC
Red Hat Product Errata RHSA-2021:4829 0 None None None 2021-11-30 09:09:18 UTC
Red Hat Product Errata RHSA-2021:4833 0 None None None 2021-11-29 10:37:18 UTC

Description Michael Kaplan 2021-11-04 16:01:30 UTC 
Creating symbolic links is possible without the symlink permission.
Comment 1 Michael Kaplan 2021-11-04 16:19:43 UTC 
References:

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
Comment 6 errata-xmlrpc 2021-11-29 10:37:16 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.9

Via RHSA-2021:4833 https://access.redhat.com/errata/RHSA-2021:4833
Comment 7 errata-xmlrpc 2021-11-30 09:09:16 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.8

Via RHSA-2021:4829 https://access.redhat.com/errata/RHSA-2021:4829
Comment 8 errata-xmlrpc 2021-12-01 12:26:04 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.7

Via RHSA-2021:4801 https://access.redhat.com/errata/RHSA-2021:4801
Comment 9 errata-xmlrpc 2021-12-02 18:35:02 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.6

Via RHSA-2021:4799 https://access.redhat.com/errata/RHSA-2021:4799
Comment 10 errata-xmlrpc 2021-12-02 22:01:05 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2021:4827 https://access.redhat.com/errata/RHSA-2021:4827
Comment 11 Product Security DevOps Team 2021-12-02 22:42:10 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-21691
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