Bug 2007750 (CVE-2021-21671) - CVE-2021-21671 jenkins: session fixation vulnerability
Summary: CVE-2021-21671 jenkins: session fixation vulnerability
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-21671
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1972354 2008113 2008114
Blocks: 2007753
TreeView+ depends on / blocked
 
Reported: 2021-09-24 18:24 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-20 02:08 UTC (History)
19 users (show)

Fixed In Version: jenkins LTS 2.289.2, jenkins 2.300
Doc Type: If docs needed, set a value
Doc Text:
Session fixation vulnerability was found in Jenkins. The existing session on login process are not invalidated and this allows an attacker to gain potentially additional access on Jenkins by using social engineering attack techniques on a target user.
Clone Of:
Environment:
Last Closed: 2021-10-20 02:08:24 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3820 0 None None None 2021-10-19 20:21:06 UTC

Description Guilherme de Almeida Suckevicz 2021-09-24 18:24:38 UTC
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.

References:
https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371
http://www.openwall.com/lists/oss-security/2021/06/30/1

Comment 1 Przemyslaw Roguski 2021-09-27 10:09:28 UTC
This vulnerability was introduced in Jenkins 2.266 and LTS 2.277.1.

Comment 4 errata-xmlrpc 2021-10-19 20:21:04 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.8

Via RHSA-2021:3820 https://access.redhat.com/errata/RHSA-2021:3820

Comment 5 Product Security DevOps Team 2021-10-20 02:08:24 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-2021-21671


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