Bug 2020323 (CVE-2021-21686)

Summary: CVE-2021-21686 jenkins: File path filters do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories
Product: [Other] Security Response Reporter: Michael Kaplan <mkaplan>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: abenaiss, aileenc, aos-bugs, bmontgom, chazlett, drieden, eparis, ggaughan, gmalinko, janstey, jburrell, jochrist, jokerman, jwon, nstielau, pbhattac, pdelbell, spandura, sponnaga, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: jenkins 2.319, jenkins LTS 2.303.3 Doc Type: If docs needed, set a value
Doc Text:
A link following vulnerability was found in Jenkins. The file path filters do not canonicalize paths allowing operations to follow symbolic links to directories they are not supposed to have access to. This may allow an attacker to read and write arbitrary files on the Jenkins controller file system.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-12-02 22:39:54 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2020611, 2020612, 2020613, 2020614, 2020615, 2020616    
Bug Blocks: 2020347    

Description Michael Kaplan 2021-11-04 15:33:33 UTC
File path filters do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

Comment 1 Michael Kaplan 2021-11-04 16:13:58 UTC
References:

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

Comment 6 errata-xmlrpc 2021-11-29 10:37:07 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 09:09:03 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 12:25:56 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 9 errata-xmlrpc 2021-12-02 18:34:53 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 22:00:55 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 22:39:52 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-2021-21686