Bug 2020324 (CVE-2021-21687) - CVE-2021-21687 jenkins: FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link
Summary: CVE-2021-21687 jenkins: FilePath#untar does not check permission to create sy...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-21687
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 15:33 UTC by Michael Kaplan
Modified: 2022-03-08 12:13 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:
An incorrect permissions validation vulnerability was found in Jenkins. The FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link, which may allow an attacker to get read and write access to arbitrary files on the Jenkins controller file system.
Clone Of:
Environment:
Last Closed: 2021-12-02 22:40:21 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 18:34:58 UTC
Red Hat Product Errata RHSA-2021:4801 0 None None None 2021-12-01 12:25:58 UTC
Red Hat Product Errata RHSA-2021:4827 0 None None None 2021-12-02 22:00:57 UTC
Red Hat Product Errata RHSA-2021:4829 0 None None None 2021-11-30 09:09:08 UTC
Red Hat Product Errata RHSA-2021:4833 0 None None None 2021-11-29 10:37:12 UTC

Description Michael Kaplan 2021-11-04 15:33:39 UTC
FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link.

Comment 1 Michael Kaplan 2021-11-04 16:14:24 UTC
References:

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455

Comment 5 errata-xmlrpc 2021-11-29 10:37:10 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 6 errata-xmlrpc 2021-11-30 09:09:06 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 7 errata-xmlrpc 2021-12-01 12:25:56 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 8 errata-xmlrpc 2021-12-02 18:34:56 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 9 errata-xmlrpc 2021-12-02 22:00:56 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 10 Product Security DevOps Team 2021-12-02 22:40:19 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-2021-21687


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